Fierce Firearms 651822 6.5mm 22\" Carbon Fiber Barrel 1:8 Twist 5/8-24 AR-15 Compatible.

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

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

Timber Creek Rifle-Length SOCOM Barrel 6.5 Grendel 18", Black

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

SPIKES TACTICAL Barrel 223/5.56 16" Hammer Forged fits AR Rifles