The CMMG Mk9 platform utilizes Colt-style 9mm SMG magazines, a true double stack from top to bottom. Equipped with the full range of AR15 controls and functionality.EML handguards feature M-LOK slots at 3, 6, & 9 o'clock positions and a full length picatinny top rail for accessories as well as an integrated handstop; Radial Delayed Blowback operating system; full kit of ZEROED parts including: pistol grip, drop-in trigger, trigger guard, extended mag release button, ambi mag catch, 60/90 degree ambi safety, linear compensator 9mm, AR15- ambi charging handle, bolt catch and polymer dust cover. Includes ASC 32rd magazine.