Best Seller | 5.11 Tactical 18L Overwatch Messenger Black 1 SZ 56648-019-1 SZ 5.11 Tactical 18L Overwatch Messenger Black 1 SZ 56648-019-1 SZ. You want a bag that offers quick access to your go-to gear and meets your day-to-day loadout which is why 5.11 created the Overwatch messenger bag. Its highly utilitarian and works... more | | $105.00 FREE shipping go to store |