Armalite\'s M153GN13CO is the flagship competition rifle built to win. This rifle is compact, light, and ultra-fast. The low profile handguard, with a railed front sight base, covers a free-floating stainless steel barrel with ArmaLite\'s own tunable muzzle brake. An adjustable gas block also allows the rifle to be individually set for optimal performance. It has an MBA-1 lightweight precision stock (adjustable LOP/comb height), Timney single-stage trigger, and Raptor ambidextrous charging handle.This carbine model has a 13.5" barrel pinned and welded to muzzle brake to create a 16" barrel and a carbine-length gas system beneath a 12" free-float 3-gun handguard. This version is CO compliant and includes a 10-round magazine.