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Ar-15/M16 300 Blackout Upper Receivers - 16'''' Ar Upper 300 Blk

Ar-15/M16 300 Blackout Upper Receivers - 16'''' Ar Upper 300 Blk

Features: 300 Blackout Upper Receivers for AR15, M4, M15, and the HK-416 platform Available with a 9", 12.5" or 16" Nitrided 1:8 Twist 4150 CMV steel Barrel M4 feedramps Includes AAC 51-tooth Blackout Flash Suppressor attached to 5/8-24 threads...

at Brownells

Radical Firearms Ar-15 Upper Receiver Assembly 300 Blackout 8.5" - Ar-15 Upper 300blk 8.5" Hbar Pist

Radical Firearms Ar-15 Upper Receiver Assembly 300 Blackout 8.5" - Ar-15 Upper 300blk 8.5" Hbar Pist

The Radical Firearms 300 Blackout HBAR Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level... ... more

Radical Firearms Ar-15 Upper Receiver Assembly 300 Blackout 8.5" - Ar-15 Upper 300blk 8.5" Hbar Pist

The Radical Firearms 300 Blackout HBAR Upper Receiver is a flat top, law-enforcement grade, drop in receiver, ready to be mounted to any Mil-Spec AR-15 lower receiver! This fully mil-spec compliant receiver provides a high-quality upper for any level...

Brownells

$239.99

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12 x 36 Inch Long Gun Cleaning Rubber Bench Mat with AR15 Carbine Imprint, Black for AR15 M4 M16 Rifle

12 x 36 Inch Long Gun Cleaning Rubber Bench Mat with AR15 Carbine Imprint, Black for AR15 M4 M16 Rifle

Description: The perfect cleaning and repair rubber mat for your AR-15, M4 or M-16. Have fun and learn while you work on your rifle. The soft top protects your gun from scratches while the neoprene rubber backing protects your work surface from... ... more

12 x 36 Inch Long Gun Cleaning Rubber Bench Mat with AR15 Carbine Imprint, Black for AR15 M4 M16 Rifle

Description: The perfect cleaning and repair rubber mat for your AR-15, M4 or M-16. Have fun and learn while you work on your rifle. The soft top protects your gun from scratches while the neoprene rubber backing protects your work surface from...

Amazon Marketplace

$21.95

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Brownells Ar-15 Complete Upper Receiver Black Keymod 300 Blk

Brownells Ar-15 Complete Upper Receiver Black Keymod 300 Blk

This Brownells' exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 300 Blackout and featuring a 16" barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver comes with a 10" handguard utilizing the KeyMod rail... ... more

Brownells Ar-15 Complete Upper Receiver Black Keymod 300 Blk

This Brownells' exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 300 Blackout and featuring a 16" barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver comes with a 10" handguard utilizing the KeyMod rail...

Brownells

$369.99 $324.99

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AR15/M16 UPPER/LOWER REC MAG WELL SET - ENH PTS

AR15/M16 UPPER/LOWER REC MAG WELL SET - ENH PTS

UPPER AND LOWER RECEIVER MAGAZINE WELL BLOCK SET Upper and Lower Receiver Magazine Well Block Set 3 piece set of heavy duty blocks securely clamp all flat top and carry handle AR-15/M16 upper and lower receiver components to prevent damage or movement... ... more

AR15/M16 UPPER/LOWER REC MAG WELL SET - ENH PTS

UPPER AND LOWER RECEIVER MAGAZINE WELL BLOCK SET Upper and Lower Receiver Magazine Well Block Set 3 piece set of heavy duty blocks securely clamp all flat top and carry handle AR-15/M16 upper and lower receiver components to prevent damage or movement...

Amazon Marketplace

$73.76

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CMMG Mk4LE OR 300 BLK Upper Receiver Group

CMMG Mk4LE OR 300 BLK Upper Receiver Group

The CMMG Mk4LE OR 300 BLK Upper Receiver Group is chambered for the 300 AAC Blackout (7.62x35mm) cartridge. It features a 16", M300 profile, 4140 chrome-moly steel barrel. A salt bath nitrided finish is applied to the barrel inside and out for improved... ... more

CMMG Mk4LE OR 300 BLK Upper Receiver Group

The CMMG Mk4LE OR 300 BLK Upper Receiver Group is chambered for the 300 AAC Blackout (7.62x35mm) cartridge. It features a 16", M300 profile, 4140 chrome-moly steel barrel. A salt bath nitrided finish is applied to the barrel inside and out for improved...

$649.99

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ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

The cantilever mount allows the attachment of Aimpoint, Burris or other 1" (one inch) red dot sights to rifles and carbines with Flat Top upper receivers or Picatinny rails. The mount allows co-witnessing of the rifle sights with the red dot sight. The... ... more

ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

The cantilever mount allows the attachment of Aimpoint, Burris or other 1" (one inch) red dot sights to rifles and carbines with Flat Top upper receivers or Picatinny rails. The mount allows co-witnessing of the rifle sights with the red dot sight. The...

Amazon.com

$72.25

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CMMG Mk4LE OR 300 BLK Upper Receiver Group

CMMG Mk4LE OR 300 BLK Upper Receiver Group

The CMMG Mk4LE OR 300 BLK Upper Receiver Group is chambered for the 300 AAC Blackout (7.62x35mm) cartridge. It features a 16", M300 profile, 4140 chrome-moly steel barrel. A salt bath nitrided finish is applied to the barrel inside and out for improved... ... more

CMMG Mk4LE OR 300 BLK Upper Receiver Group

The CMMG Mk4LE OR 300 BLK Upper Receiver Group is chambered for the 300 AAC Blackout (7.62x35mm) cartridge. It features a 16", M300 profile, 4140 chrome-moly steel barrel. A salt bath nitrided finish is applied to the barrel inside and out for improved...

$649.99

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Wheeler AR -15 300 AAC Blackout Bore Guide

Wheeler AR -15 300 AAC Blackout Bore Guide

The AR-15 & AR-10/LR Bore Guides are precision CNC machined aluminum with a durable anodized finish. They fit securely in any AR-15 or LR/308 upper and can be retained in place by closing the dust cover on the upper which engages a groove in the guide.... ... more

Wheeler AR -15 300 AAC Blackout Bore Guide

The AR-15 & AR-10/LR Bore Guides are precision CNC machined aluminum with a durable anodized finish. They fit securely in any AR-15 or LR/308 upper and can be retained in place by closing the dust cover on the upper which engages a groove in the guide....

Amazon.com

$26.99

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CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard,

CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard,

CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard, Black 30BC353 ... more

CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard,

CMMG MK4T Upper, 300 AAC Blackout, 16" Stainless Barrel, Fits AR, Flat Top, A2 Brake Chokes, CMMG RKM11 KeyMod Handguard, Black 30BC353

$872.00

FREE shipping

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Yankee Hill Machine Co Dust Cover, 300 Blackout, Fits AR Rifles, Black, Includes: Dust Cover, Rod, and Retaining Clip Spring

Yankee Hill Machine Co Dust Cover, 300 Blackout, Fits AR Rifles, Black, Includes: Dust Cover, Rod, and Retaining Clip Spring

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the... ... more

Yankee Hill Machine Co Dust Cover, 300 Blackout, Fits AR Rifles, Black, Includes: Dust Cover, Rod, and Retaining Clip Spring

YHM has long been a supplier of Caliber Marked upper receivers, but we soon asked ourselves "What if we want to change the caliber of that upper receiver?" For this reason, we now offer caliber marked dust covers for those who may end up changing the...

$20.07

FREE shipping

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ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200, Black

ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200, Black

The PM200 AR-15/M16 Flip Up Ranging Rear Sight has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a... ... more

ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200, Black

The PM200 AR-15/M16 Flip Up Ranging Rear Sight has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a...

Jet.com

$89.99

FREE shipping

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NcSTAR AR15 Flip Up Rear Sight Marflr, As Shown

NcSTAR AR15 Flip Up Rear Sight Marflr, As Shown

The NcSTAR AR-15 Flip up Rear Sight will fit virtually all AR-15 M4 and M16 flattop Picatinny rail upper receivers. A2 rear sight is fully adjustable for windage with knurled click adjustable controls. Large steel thumb nut and precise rail clamp for... ... more

NcSTAR AR15 Flip Up Rear Sight Marflr, As Shown

The NcSTAR AR-15 Flip up Rear Sight will fit virtually all AR-15 M4 and M16 flattop Picatinny rail upper receivers. A2 rear sight is fully adjustable for windage with knurled click adjustable controls. Large steel thumb nut and precise rail clamp for...

Jet.com

$22.09

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ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

The cantilever mount allows the attachment of Aimpoint, Burris or other 1" (one inch) red dot sights to rifles and carbines with Flat Top upper receivers or Picatinny rails. The mount allows co-witnessing of the rifle sights with the red dot sight. The... ... more

ProMag AR-15/M16 Flat Top Aimpoint Cantilever Mount, Black, 1-Inch

The cantilever mount allows the attachment of Aimpoint, Burris or other 1" (one inch) red dot sights to rifles and carbines with Flat Top upper receivers or Picatinny rails. The mount allows co-witnessing of the rifle sights with the red dot sight. The...

Amazon Marketplace

$72.02

FREE shipping

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Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Hooks for AR15 AR-15 M4 M-4 M16 M-16

Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Hooks for AR15 AR-15 M4 M-4 M16 M-16

Official Product of Ultimate Arms Gear, Brand New. Material: 58 feet of high quality 7-strand 550LB Paracord (Parachute cord), and 3 feet of breaking strength 100% nylon webbing. Adjustable from 36" Inches to 56" Inches (Approx). Provided with 2 Quick... ... more

Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Hooks for AR15 AR-15 M4 M-4 M16 M-16

Official Product of Ultimate Arms Gear, Brand New. Material: 58 feet of high quality 7-strand 550LB Paracord (Parachute cord), and 3 feet of breaking strength 100% nylon webbing. Adjustable from 36" Inches to 56" Inches (Approx). Provided with 2 Quick...

Amazon Marketplace

$18.99

FREE shipping

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Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Swivels for AR15 AR-15 M4 M-4 M16 M-16

Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Swivels for AR15 AR-15 M4 M-4 M16 M-16

Official Product of Ultimate Arms Gear, Brand New. Material: 58 feet of high quality 7-strand 550LB Paracord (Parachute cord), and 3 feet of breaking strength 100% nylon webbing. Adjustable from 36" Inches to 56" Inches (Approx). Provided with 2 Quick... ... more

Ultimate Arms Gear 550 lb Paracord Survial Shoulder Harness Strap Sling, Black Over 56' ft Parachute Cord with Swivels for AR15 AR-15 M4 M-4 M16 M-16

Official Product of Ultimate Arms Gear, Brand New. Material: 58 feet of high quality 7-strand 550LB Paracord (Parachute cord), and 3 feet of breaking strength 100% nylon webbing. Adjustable from 36" Inches to 56" Inches (Approx). Provided with 2 Quick...

Amazon Marketplace

$18.99

FREE shipping

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High Standard Ar-15/M16 Complete 300aac Upper Assembly

High Standard Ar-15/M16 Complete 300aac Upper Assembly

Build or convert a rifle to run the 300 Blackout round with this complete upper assembly from High Standard. The A3 flat top upper is coupled with a 16", parkerized barrel that has a 1-8 twist and is made from 4140 steel.Upper assembly also includes... ... more

High Standard Ar-15/M16 Complete 300aac Upper Assembly

Build or convert a rifle to run the 300 Blackout round with this complete upper assembly from High Standard. The A3 flat top upper is coupled with a 16", parkerized barrel that has a 1-8 twist and is made from 4140 steel.Upper assembly also includes...

Brownells

$639.99

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Ultimate Arms Gear 1.25" QD Quick Detach Slot Loop Swivel Attach Locks Stud Adapter for AR15, AR-15, M4, M-4, M16, M-16 .223 5.56 556 .308

Ultimate Arms Gear 1.25" QD Quick Detach Slot Loop Swivel Attach Locks Stud Adapter for AR15, AR-15, M4, M-4, M16, M-16 .223 5.56 556 .308

Official Product of Ultimate Arms Gear, Brand New. 1 Peice Steel 1.25" (1-1/4-Inch)). Designed for Straps 1.25" Wide. Super Heavy-Duty Swivel, Will Hold Up To Years Of Heavy Outdoor Use. Quick and Easy Installation. All Steel Construction, Black Finish. ... more

Ultimate Arms Gear 1.25" QD Quick Detach Slot Loop Swivel Attach Locks Stud Adapter for AR15, AR-15, M4, M-4, M16, M-16 .223 5.56 556 .308

Official Product of Ultimate Arms Gear, Brand New. 1 Peice Steel 1.25" (1-1/4-Inch)). Designed for Straps 1.25" Wide. Super Heavy-Duty Swivel, Will Hold Up To Years Of Heavy Outdoor Use. Quick and Easy Installation. All Steel Construction, Black Finish.

Amazon Marketplace

$8.95

FREE shipping

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The Device Manufacturing Ar-15/M16 Upper Receiver Fixture - Mk1mod0 Device

The Device Manufacturing Ar-15/M16 Upper Receiver Fixture - Mk1mod0 Device

Professional Grade AR Upper Receiver Fixture. Robust fixture designed for years of hard use. Quick, intuitive interface that allows rapid building/rebuilding and repair of the entire upper receiver of the AR15/M16/M4 family of rifles/carbines/pistols.... ... more

The Device Manufacturing Ar-15/M16 Upper Receiver Fixture - Mk1mod0 Device

Professional Grade AR Upper Receiver Fixture. Robust fixture designed for years of hard use. Quick, intuitive interface that allows rapid building/rebuilding and repair of the entire upper receiver of the AR15/M16/M4 family of rifles/carbines/pistols....

Brownells

$299.99 $279.99

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Wheeler AR -15 300 AAC Blackout Bore Guide

Wheeler AR -15 300 AAC Blackout Bore Guide

The AR-15 & AR-10/LR Bore Guides are precision CNC machined aluminum with a durable anodized finish. They fit securely in any AR-15 or LR/308 upper and can be retained in place by closing the dust cover on the upper which engages a groove in the guide.... ... more

Wheeler AR -15 300 AAC Blackout Bore Guide

The AR-15 & AR-10/LR Bore Guides are precision CNC machined aluminum with a durable anodized finish. They fit securely in any AR-15 or LR/308 upper and can be retained in place by closing the dust cover on the upper which engages a groove in the guide....

Amazon Marketplace

$24.89

FREE shipping

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Fightlite Industries Mcr Belt-Fed Upper Receiver Full Auto - Mcr Belt-Fed Upper Receiver Auto 16.25"

Fightlite Industries Mcr Belt-Fed Upper Receiver Full Auto - Mcr Belt-Fed Upper Receiver Auto 16.25"

The FightLite Industries MCR Belt Fed AR-15/M16 Upper Receiver allows you to convert your AR-15 or M16 from a standard, magazine fed rifle, into a multi-purpose belt-fed, that can also feed from a magazine. Simply attach the upper as you would any... ... more

Fightlite Industries Mcr Belt-Fed Upper Receiver Full Auto - Mcr Belt-Fed Upper Receiver Auto 16.25"

The FightLite Industries MCR Belt Fed AR-15/M16 Upper Receiver allows you to convert your AR-15 or M16 from a standard, magazine fed rifle, into a multi-purpose belt-fed, that can also feed from a magazine. Simply attach the upper as you would any...

Brownells

$4,195.00

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Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 300 Blk

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 300 Blk

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover.... ... more

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 300 Blk

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover....

Brownells

$11.99

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Brownells Ar-15 Complete Upper Receiver Black Keymod 5.56

Brownells Ar-15 Complete Upper Receiver Black Keymod 5.56

This Brownells' exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 5.56x45mm NATO and featuring a 16" barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver comes with a 10" handguard utilizing the KeyMod rail... ... more

Brownells Ar-15 Complete Upper Receiver Black Keymod 5.56

This Brownells' exclusive Complete AR Upper Receiver is Made in the USA. Chambered in 5.56x45mm NATO and featuring a 16" barrel with a 1:8 twist. The standard A3 13-slot aluminum flat top receiver comes with a 10" handguard utilizing the KeyMod rail...

Brownells

$369.99 $324.99

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Mega Arms Ar-15/M16 Megalithic Upper Receiver - Ar15 Megalithic Upper Receiver

Mega Arms Ar-15/M16 Megalithic Upper Receiver - Ar15 Megalithic Upper Receiver

The MTS (Megalithic Tactical System) has been designed to provide superior precison and unique features for the user. Upper features integrated leveling system, ensuring accurate shot placement at lone ranges. Includes steel inserted QD sockets on each... ... more

Mega Arms Ar-15/M16 Megalithic Upper Receiver - Ar15 Megalithic Upper Receiver

The MTS (Megalithic Tactical System) has been designed to provide superior precison and unique features for the user. Upper features integrated leveling system, ensuring accurate shot placement at lone ranges. Includes steel inserted QD sockets on each...

Brownells

$636.00

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ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

This rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight rear sight to co-witness with red dot or holographic sights. The sight locks in its upright position, a spring loaded... ... more

ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

This rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight rear sight to co-witness with red dot or holographic sights. The sight locks in its upright position, a spring loaded...

Amazon Marketplace

$89.95

FREE shipping

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ProMag AR-15/M16 Ranging Flip-Up Rear Sight‏, Black

ProMag AR-15/M16 Ranging Flip-Up Rear Sight‏, Black

The PM200 M16 / AR-15 Flip Up Ranging Rear Right has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a... ... more

ProMag AR-15/M16 Ranging Flip-Up Rear Sight‏, Black

The PM200 M16 / AR-15 Flip Up Ranging Rear Right has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a...

Amazon Marketplace

$97.45

FREE shipping

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Aero Precision Ar-15/M16 Assembled Upper Receiver - Ar-15/M16 Assembled Upper Receiver, Fde Cerakote

Aero Precision Ar-15/M16 Assembled Upper Receiver - Ar-15/M16 Assembled Upper Receiver, Fde Cerakote

The AR-15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps. Black model... ... more

Aero Precision Ar-15/M16 Assembled Upper Receiver - Ar-15/M16 Assembled Upper Receiver, Fde Cerakote

The AR-15 Assembled Upper Receiver comes with the port door and forward assist already installed. Forged from 7075-T6 aluminum, this assembled upper is precision machined to mil- spec M16/M4 specifications and features M4 feedramps. Black model...

Brownells

$114.99

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Adams Arms Ar-15/M16 5.56 16" Basic Piston Upper Receivers - Gas Piston Upper Receiver, Carbine

Adams Arms Ar-15/M16 5.56 16" Basic Piston Upper Receivers - Gas Piston Upper Receiver, Carbine

Complete Base upper receiver assembly comes ready to install on mil-spec lower receiver to produce a reliable, positive-cycling gas piston gun. Adams Arms' proven piston system doesn't vent hot gases and burned powder into the bolt carrier and... ... more

Adams Arms Ar-15/M16 5.56 16" Basic Piston Upper Receivers - Gas Piston Upper Receiver, Carbine

Complete Base upper receiver assembly comes ready to install on mil-spec lower receiver to produce a reliable, positive-cycling gas piston gun. Adams Arms' proven piston system doesn't vent hot gases and burned powder into the bolt carrier and...

Brownells

$529.99

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ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

This rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight rear sight to co-witness with red dot or holographic sights. The sight locks in its upright position, a spring loaded... ... more

ProMag AR-15/M16 Single Plane Dual Aperture Flip-Up Rear Sight, Black

This rear sight attaches to AR-15 / M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight rear sight to co-witness with red dot or holographic sights. The sight locks in its upright position, a spring loaded...

Amazon.com

$80.59

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High Standard Ar-15/M16 300 Blk Barrel - Ar-15/M16 16" 300blk Barrel No Chrome 5/8-24

High Standard Ar-15/M16 300 Blk Barrel - Ar-15/M16 16" 300blk Barrel No Chrome 5/8-24

Made from 4140 M4 Barrel extension with M4 feed ramps Parkerized 1/8 Twist Medium Contour 5/8-24 Threaded muzzle Carbine Length Gas System Mfg: High Standard ... more

High Standard Ar-15/M16 300 Blk Barrel - Ar-15/M16 16" 300blk Barrel No Chrome 5/8-24

Made from 4140 M4 Barrel extension with M4 feed ramps Parkerized 1/8 Twist Medium Contour 5/8-24 Threaded muzzle Carbine Length Gas System Mfg: High Standard

Brownells

$199.99

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Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 5.56 Nato

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 5.56 Nato

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover.... ... more

Wilson Combat Ar-15/M16 Marked Ejection Port Covers - Ar15/M16 Ejection Port Cover 5.56 Nato

These Wilson Combat AR-15 Ejection Port Covers give you the ability to quickly identify upper receivers of various calibers. Finished in Black Armor-Tuff, the covers feature the caliber of your choice. Replaces your existing ejection port cover....

Brownells

$11.99

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Daniel Defense Ar-15/M16 300 Blk S2w Hammer Forged Barrels - 16" S2w Carbine Length 300 Blk Barrel,

Daniel Defense Ar-15/M16 300 Blk S2w Hammer Forged Barrels - 16" S2w Carbine Length 300 Blk Barrel,

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential-like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in... ... more

Daniel Defense Ar-15/M16 300 Blk S2w Hammer Forged Barrels - 16" S2w Carbine Length 300 Blk Barrel,

These barrels are cold hammer-forged from high-grade chromium-molybdenum-vanadium alloy steel for exceptional strength and accuracy potential-like a high-end match rifle barrel. Magnetic particle inspection (MPI) ensures there are no internal flaws in...

Brownells

$275.00

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Brownells Ar-15/M16 Receiver Taps & Dies - 1-1/4-18 Carbon Steel Die

Brownells Ar-15/M16 Receiver Taps & Dies - 1-1/4-18 Carbon Steel Die

Chases and cleans the two most important threads on the AR-15/M16 receivers. 1.250"-18 tpi - Corrects out of spec or cross-threaded upper receivers and barrel nuts. 1-3/16"-16 tpi - Makes receiver extension (recoil buffer) tube and lower receiver... ... more

Brownells Ar-15/M16 Receiver Taps & Dies - 1-1/4-18 Carbon Steel Die

Chases and cleans the two most important threads on the AR-15/M16 receivers. 1.250"-18 tpi - Corrects out of spec or cross-threaded upper receivers and barrel nuts. 1-3/16"-16 tpi - Makes receiver extension (recoil buffer) tube and lower receiver...

Brownells

$39.99

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Radical Firearms Rifle 16" 300 Aac Hbar Contour, 12" Fgs, M4 Collapisble Stock - Rifle 16" 300 Aac H

Radical Firearms Rifle 16" 300 Aac Hbar Contour, 12" Fgs, M4 Collapisble Stock - Rifle 16" 300 Aac H

The Radical Firearms complete AR-rifle is a fully Mil-Spec AR-15 rifle built using our law enforcement grade upper receivers and mil spec lowers. The 4150 Chromoly Vanadium Steel barrels are Melonite treated for a harder-than chrome finish without... ... more

Radical Firearms Rifle 16" 300 Aac Hbar Contour, 12" Fgs, M4 Collapisble Stock - Rifle 16" 300 Aac H

The Radical Firearms complete AR-rifle is a fully Mil-Spec AR-15 rifle built using our law enforcement grade upper receivers and mil spec lowers. The 4150 Chromoly Vanadium Steel barrels are Melonite treated for a harder-than chrome finish without...

Brownells

$499.99

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Hiperfire Ar-15/Ar-10 Enhanced Duty Trigger2 - Ar-15/Ar 308 Enhanced Duty Trigger2

Hiperfire Ar-15/Ar-10 Enhanced Duty Trigger2 - Ar-15/Ar 308 Enhanced Duty Trigger2

Drop-In "AR15/10" Fire-Control for .223/5.56 NATO, 300 BLK, .308/7.62 NATO Enhanced Duty Trigger 2 User-Adjustable Trigger Weights of 4�+ and 5�+ lbs Single Stage, Semi-Auto For Standard AR Lower Receivers Using Small Pins of 0.154-inch Diameter "Hint"... ... more

Hiperfire Ar-15/Ar-10 Enhanced Duty Trigger2 - Ar-15/Ar 308 Enhanced Duty Trigger2

Drop-In "AR15/10" Fire-Control for .223/5.56 NATO, 300 BLK, .308/7.62 NATO Enhanced Duty Trigger 2 User-Adjustable Trigger Weights of 4�+ and 5�+ lbs Single Stage, Semi-Auto For Standard AR Lower Receivers Using Small Pins of 0.154-inch Diameter "Hint"...

Brownells

$94.00

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Yankee Hill Machine Company Black Diamond Specter XL Carbine Top End Upper, 556NATO, 16" Barrel, 1:7 Twist, YHM Flip Front and Rear Sight, Black

Yankee Hill Machine Company Black Diamond Specter XL Carbine Top End Upper, 556NATO, 16" Barrel, 1:7 Twist, YHM Flip Front and Rear Sight, Black

This Yankee Hill Machine AR-15 Specter XL Black Diamond Upper Assembly is chambered in 5.56x45mm NATO and comes ready to fire right out of the box upon installation onto any standard AR-15 lower receiver. As YHM's flagship upper receiver group, the... ... more

Yankee Hill Machine Company Black Diamond Specter XL Carbine Top End Upper, 556NATO, 16" Barrel, 1:7 Twist, YHM Flip Front and Rear Sight, Black

This Yankee Hill Machine AR-15 Specter XL Black Diamond Upper Assembly is chambered in 5.56x45mm NATO and comes ready to fire right out of the box upon installation onto any standard AR-15 lower receiver. As YHM's flagship upper receiver group, the...

$984.24

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CMMG, Inc Bbl Sub-Assm, 16.1" MT 416SS, 300 BLK

CMMG, Inc Bbl Sub-Assm, 16.1" MT 416SS, 300 BLK

Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.Features:- Medium Taper Profile- 416 Stainless Steel- Bead Bl ... more

CMMG, Inc Bbl Sub-Assm, 16.1" MT 416SS, 300 BLK

Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.Features:- Medium Taper Profile- 416 Stainless Steel- Bead Bl

$202.85 $178.28

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AR-15/M16 U Rcvr Mag Well Vise Blk Set

AR-15/M16 U Rcvr Mag Well Vise Blk Set

This set of heavy duty blocks securely clamps all flat-top and carry-handle AR-15/M16 upper and lower receiver components to prevent damage or movement during repair, assembly and cleaning. ... more

AR-15/M16 U Rcvr Mag Well Vise Blk Set

This set of heavy duty blocks securely clamps all flat-top and carry-handle AR-15/M16 upper and lower receiver components to prevent damage or movement during repair, assembly and cleaning.

$51.10

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ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200

ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200

The PM200 AR-15/M16 Flip Up Ranging Rear Sight has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15/M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight... ... more

ProMag AR15 Flip Up Ranging Rear Sight Aluminum PM200

The PM200 AR-15/M16 Flip Up Ranging Rear Sight has all of the same great features as the standard PM136 sight. This low profile rear sight attaches to AR-15/M16 flat top A3 upper receivers. The sight may be used as a back-up rear sight or a lightweight...

$126.74 $97.45

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AR Forend Rail Kit

AR Forend Rail Kit

AR Forend Rail Kit: Allows for quick attachment of 3 rails to forward end of AR15, M4 and M16 rifles Can attach 2 accessories to upper forearm and 1 to bottom rail Reversible Lightweight Locks securely into place using holds in standard forend 2-year... ... more

AR Forend Rail Kit

AR Forend Rail Kit: Allows for quick attachment of 3 rails to forward end of AR15, M4 and M16 rifles Can attach 2 accessories to upper forearm and 1 to bottom rail Reversible Lightweight Locks securely into place using holds in standard forend 2-year...

$49.95 $23.98

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Double Star Ds4 5.56 16" Bbl 30+1

Double Star Ds4 5.56 16" Bbl 30+1

Fixed front sight and 16-inch 1:9- or 1:7-inch twist 5.56 barrel? Check. Forged upper and lower receiver? Check. Adjustable stock? Check. With all of these options, the DS4 is the perfect gateway carbine, ideal for both entry-level AR enthusiasts and... ... more

Double Star Ds4 5.56 16" Bbl 30+1

Fixed front sight and 16-inch 1:9- or 1:7-inch twist 5.56 barrel? Check. Forged upper and lower receiver? Check. Adjustable stock? Check. With all of these options, the DS4 is the perfect gateway carbine, ideal for both entry-level AR enthusiasts and...

Brownells

$839.99

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