COMBAT 5.56X45 NATO 12.5'' V2 PROFILE 1/2''X28 CMV 1-7 TWIST

LBE Unlimited Barrel 5.56x45mm 12.50" - Black - High-Performance Barrel for Enhanced Accuracy and Tactical Use - BAR125M

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

FAXON AR15 MATCH BBL 6MM ARC 12.5 1:7.5 5R GUNNER PROFILE

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

GREAT LAKES FIREARMS AR15 M4 223 Wylde 16" 1:8" Twist 1/2X28 Barrel

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