Barrel and Choke Tubes | The Gamma 556SL is long enough to provide an overall length of 16" when permanently affixed to the barrel. Its outside diameter of .745 inches allows you to install and service your gas system without removing the muzzle brake. The 3-chamber design looks great on any st..
Barrel and Choke Tubes | Fn America Barrel, 16", Black Finish, Button Broached, Mid Length Gas System, M16, 5.56 20-100041
Product Type: Barrel
Fit: AR Rifles
Accessories: 1:7 Twist
Description: Mid Length Gas System
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