When it comes to size this CMMG Mk47 is the middle child of the bunch. With a 12.5" barrel, it's the longest configuration in the Banshee series, offering the right blend between maneuverability and ballistic performance. The Mk47 Platform is CMMG's mid-size AR platform, utilizing more robust receivers and components, like their PowerBolt Technology, without adding unneeded bulkiness. If the magwell on the Mk47's looks ready to take AK-pattern magazines, you would be right. Since AK magazines were designed around the 7.62x39mm cartridge, CMMG figured if it's not broke, why fix it? The Banshee series represents the msot innovatie AR pistols available today. From the quick deploying RipBrace, to the stylized receivers and EML handguards, every Banshee is tailor-made to be the personal defense weapon you can always depend on. With full length M-Lok slots on both sides and the bottom of the hanguard as well as M-Lok between the top Picatinny rail sections, you'll always have enough space for those must have accessories. Mk47 Zeroed Parts and Accessories- Quality Comes Standard The AR platform is well known for its capability for customization, and the Mk47 is no exception, but picking the right parts doesn't have to be a nightmare of homework. Everything from the RipBrace to the full kit of Zeroed parts and accessories are made here in the USA with quality and attention to detail that is second to none and each Mk47 Banshee comes equipped with a slew of Zeroed parts standard. Lifetime Quality Guarantee CMMG aims to please, that's why every CMMG product is backed by their lifetime quality guarantee against material and workmanship defects. Specifications: Platform: Mk47 Caliber: 7.62x39mm Operating System: Direct Impingement Barrel Length: 12.5" Barrel Twist: 1:10" Barrel Contour: MT Barrel Material: 4140CM, SBN Muzzle Device: CMMG Zeroed Linear Compensator Muzzle Thread: 5/8"x24 Gas Port Location: Carbine Gas Block: 0.750" Non-Adjustable Upper Receiver: Billet 7075 T6 Aluminum Lower Receiver: Mk47 Billet 7075 T6 Aluminum Handguard: CMMG EML11 M-Lok Finish: Midnight Bronze Charging Handle: CMMG Zeroed Ambi Pistol Grip: CMMG Zeroed Pistol Grip Buffer Type: Carbine Receiver Extension: CMMG 6 Position Fastback Extension Brace: CMMG RipBrace Trigger Type: Mil-Spec Single Stage Trigger Guard: Integrated Safety Selector: CMMG Zeroed 60/90 Degree Magazine: Magpul 30rd PMAG Weight: 6.5lbs Length: 28.7"