LMT 5.56 Chrome Lined M4 AR-15 Barrel with A2 FSB - 10.5"

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

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

FN America AR-15/M4 Barrel - Precision and Reliability in Stealthy Black - 20-100047

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

Proof Research AR-Type Barrel 11.50" for AR-Style, Stainless - 100387