Desert Tech MDRX Conversion Kit MDR-CK-B1130-SE-B, Side Eject, 5.56 NATO, 11.5 in Threaded Barrel, Black

Griffin Armament GAREC5KFDEAM-W 5K RECCE 5.56mm 1.50 Flat Dark Earth Stainless Steel 1/2x28

DPMS KITTY KAT 5.56 7.5IN BARREL A4 QUAD RAIL CAR BRACE FDE DP51655227754

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

Griffin Armament GAREC5AM-W 5 RECCE 5.56mm 1.50" Black Stainless Steel 1/2"x28

Barrett MRAD 17" Barrel .308 Win Conversion Kit w/ One 5-Round Magazine