Krytac Black Trident M4 SPR Outer Barrel Assembly

Daniel Defense 11.5" Government Carbine Length Steel Outer Barrel

XFORCE Carbon Fibre Outer Barrel 155mm

XFORCE Carbon Fibre Outer Barrel 363mm

M4 Barrel Front Section

Daniel Defense 12.5" Government Carbine Length Steel Outer Barrel

Daniel Defense 10.3" Government Carbine Length Steel Outer Barrel

SIG MCX Adjustable Outer Barrel With Gas Block Set

XFORCE Carbon Fibre Outer Barrel 135mm