Our Combat FSB barrels use a traditional Government profile, are 1:7 twist, 5.56mm NATO chambered, 4150CMV steel, and QPQ treated inside and out.
They have F-Marked FSB towers (taper pinned), and include USGI barrel nuts, Delta Ring assemblies, and handguard caps.
Select from: 11.5″ (carbine length), 13.9″ (mid length), 16″ (mid length), and 20″ (rifle length).