Luth-ar BL-11-7 5.56mm 11.50" Button Broached Black Phosphate Chrome Moly Vanadium Fits AR-15

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

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

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

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