AR-15 16\" Contour Barrel, 5.56 NATO, 1:7, Parkerized

Tacfire 9mm 16" Barrel, Nitride Black - BAR9MM-16-BN

Brownells BRN-4 10.4 Inch Medium Contour Chrome Lined Barrel 5.56x45 1-7 Twist

BALLISTIC ADVANTAGE Premium Series 6MM ARC 16", 5/8x24, 1:7 Mid Length Gas Barrel for AR10

Brownells BRN-4 13.7'' Barrel Medium Chrome Lined Phosphate 5.56x45 1-7 Twist

Ballistic Advantage AR-15 Barrel 5.56x45mm NATO 20" Government Contour 1:7" Twist QPQ

ONE HORSE 10.5" Carbine Gas 5.56 NATO Barrel 1:7

Brownells BRN-4 16 Inch Barrel Medium Chrome Lined Phosphate 5.56x45 1-7 Twist