Product Specs Action: Semi-auto direct impingement Chamber: 5.56 NATO. This rifle will also shoot .223 Twist Rate: 1/9 button rifled Muzzle Device: A2 flash hider (Stag Arms Compensator on post ban models) Barrel: 16", 4140 steel, chrome lined, government profile, manganese phosphate coated Handguard: Thermoplastic with double heat shields Upper Receiver: Forged and mil-spec 7075 T6 aluminum with type 3 hard coat anodizing and a picatinny rail on top Bolt Carrier: Enhanced semi-auto with a manganese phosphate coating Charging Handle: Standard mil-spec Front Sight: F-marked A2 front sight, side sling swivel, and bayonet lug (no bayonet lug on post ban models) Rear Sight: Midwest Industries ERS flip up sight Lower Receiver Material: 7075 T6 aluminum with a type 3 hard coat anodizing Hammer/Trigger pin size: Mil-spec small pin .154" Pivot/Takedown Pin Size: Mil-spec small pin - .250" Caliber Marking: 5.56 NATO Buttstock: Mil-spec 6 position (Post-ban stock looks the same non-adjustable at the furthest extension) Buffer: Standard carbine buffer and spring Trigger: Mil-spec single stage trigger with a non-adjustable 5-8 pound trigger pull Grip: A2 style plastic grip Magazine: 30rd (Post-ban versions will have a 10rd magazine) Safety Selector: Left Hand Shooter's Vault DOES NOT CHARGE CREDIT CARD FEES !!! Shooters Vault has 2 locations to choose from in Phoenix AZ we are a Family owned brick and mortar business. Our Hours of operation are: M-F 9-7 and Sat 9-6 Like us on Facebook under Shooters Vault and Shooters Vault Happy Valley to see Contact info and NEW product updates. You can find us on the web. By Google search for Shooters Vault and we will pop up. We are a CLASS III NFA dealer! Call us for details on purchasing and or filling out paper work. Seller reserves the right to end the at any time. All items sold as is no exchanges or returns. When you select your FFL Dealer they may fax/ email their FFL Documents. Please allow 1-3 business days for items to ship once payment and FFL are received. Shipping is at the Buyer cost. We ship Long guns UPS Ground for $25.00. Handguns are shipped USPS priority mail or UPS ground for $18.00. The shipping is non insured. If buyer wants insurance we will ship at the actual insurance cost rate per item. Once payment and FFL are received we will email you a tracking/delivery confirmation number. Stop by our stores, give us a call, or email us with any questions.