12.7x42 16\" Parkerized Heavy Barrel - 1:20 Twist - Carbine Length Gas System

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

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

FN America AR-15 16" Barrel 1:7 Twist Button Broached, Black - 20100046

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

Sons of Liberty Gun Works Precision SPR Barrel 6mm MAX 16", Black - Superior Quality - 16PRECISIONSPR-6MAX

DIAMONDBACK FIREARMS Barrel 223 Wylde 18 Mid Length Black Nitride

TacFire AR-15 Blow Back 9mm 1:10 4150 Chrome Moly Vanadium Barrel - 1/2x36 - 7.5"