Forget what you thought you knew about Pistol Caliber Carbines, the DISSENT Br4 brings classic rifle ergonomics together with the fixed ejector Radial Delayed Blowback technology of our 9mm DISSENT lineup. The 9mm Br4 uses our 9mm conversion magazines, which also means that the Br4 lower will accept other STANAG pattern magazines if you decide to swap to another Mk4 DISSENT upper group.The Rifle for Restricted StatesAlthough just shy of being available to all 50 US states, the Br4 gives people in 2A unfriendly states a modern choice in a go-to carbine. Combining traditional controls and ergonomics together with modern engineering, there's a Br4 for every use case, from hunting, to self-defense, or sporting use.Radial Delayed Blowback(TM) Compact Action9mm ammo loadings can vary greatly, from supersonic to subsonic. With a wide range of bullet weights comes new engineering challenges in a new platform. The 9mm Radial Delayed Blowback Compact Action addresses these challenges by utilizing a fixed ejector in the upper receiver. Added benefits are a lighter BCG with less felt recoil while providing consistent performance with a wide range of ammo.Lifetime Quality GuaranteeWe aim to please, that's why every CMMG product is backed by our Lifetime Quality Guarantee against material and workmanship defects. Learn More.~Firearms shipping to states with magazine capacity restrictions will only ship with 10rd magazines in place of standard capacity magazines. CMMG does not address any other state compliancy requirements for further restricted states.