Stag 15 Retro Rifles are the high quality durable military proven A2 rifle you've been looking for. Made to mil-spec standards with a removable A3 carry handle A2 buttstock with trap door for storage and a rifle length thermoplastic handguard with double heat shields The Stag 15 Retro Rifle features a 5.56x45mm NATO chamber 20 1/7 chrome-lined barrel A2 birdcage flash hider mil-spec charging handle and a mil-spec manganese phosphate coated M16 BCG. Every complete AR15 rifle from Stag Arms comes with a Transferable Lifetime Warranty an Infinite Shot Barrel Guarantee and a magazine. - Platform: Stag 15 - Gas System: Direct Impingement - Model: Retro - Safety Selector Orientation: Left-Handed - Color: Black - Caliber: 5.56MM NATO - Barrel Length: 20 - Barrel Material / Finish: 4150 CMV Chrome-Lined Phosphate - Muzzle Device: Flash Hider - Handguard Material: Polymer - Bolt Finish: Carpenter 158 - Phosphate - Bolt Carrier Finish: Full-Auto 8620 Chrome-Lined Phosphate - Pistol Grip Model: A2 Pistol Grip - Stock Model: A2 Mil-Spec Buttstock - Magazine Capacity: 20 - Magazine Model: GI Mag