Desert Tech WLVRN Semi Bullpup 5.56 NATO/.223 REM 11.5" Barrel Assembly WLV-BR-B11

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

Faxon Firearms M4 Button Rifled Barrel 5.56x45mm 16", Black

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

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

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

SEEKINS PRECISION Barrel 223 Wylde 10.5" Black/SS Match Grade