American Tactical Inc Alpha Maxx 5.56x45mm NATO 7.5in Barrel 60rd MLOK AR-15

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FN America AR-15 16" Barrel 556NATO 1:7 Twist Button Broached, Black - 20100039

Faxon Firearms Mid-Length Button Rifled Gunner Barrel 5.56x45mm 16", Black

Ballistic Advantage Performance Barrel 5.56x45mm 13.70", Black - Compact and Efficient Barrel - BABL556036F

ONE HORSE 7.5" 5.56 NATO Barrel 1:7

AMERICAN TACTICAL IMPORTS MILSPORT 5.56 NATO 16" 60rd - Black

CA157.5 Barrel7''FullPic Mlok300 Pistol 10rd