Product Description
16.1'' Bbl Sub-assy M4 1-7 1/2-28'' Black NitrideCartridge : AKK_5.56 mm NATO
Contour : M4
Finish : Stainless Black Nitride
Gas System Length : Carbine
Length : 16.1''
Make : AR-15
Make/Model : AR-15
Muzzle Threads : 1/2-28
Twist : 1-7