The CMMG Banshee Mk4 5.56 10.5 Armor w Ripbrace is a compact AR pistol built on the Mk4 platform. It features a 10.5 inch 5.56 NATO barrel with 1:7 twist, a CMMG ZEROED Linear Comp muzzle device with 1/2x28 threads, a billet upper receiver and forged lower receiver. The handguard is a full-length M-LOK EML rail, with a carbine gas system and adjustable .750 gas block. It weighs about 5.5 pounds and measures 26 inches in length with the Ripbrace stock mounted. Includes ZEROED pistol grip and ambi safety components. Barrel material is 4140CM, SBN; Upper is 6061-T6 aluminum; Lower is 7075-T6 aluminum.