Cmmg's barrel sub-assembly is ideal for building your custom ar-15 upper group.It comes with properly installed m4 barrel extension.Accuracy matters with any build, and with this 16.1 barrel...
Cmmg's ps90 sbr threaded barrel is constructed of 4150 chrome moly vanadium with chrome lining and a maganese phosphate coating.It is 10.4" long and is chambered for fn 5.7x28mm caliber.Caliber Or...