The Stag 15 M4 Rifle is the high quality durable military proven M4 design rifle you've been looking for. Made to mil-spec standards this rifle satisfies the need for a standard GI carbine.The Stag 15 M4 features a 5.56x45mm NATO chamber 16" 1/7 chrome lined barrel with a thermoplastic handguard a Magpul MOE trigger guard a six position buttstock A2 birdcage flash hider 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. Features: Weight: 6.75 lbs Length: 32.25" collapsed 35.5" extended Action: Semi-Auto Direct Impingement Caliber: 5.56 NATO | .223 Twist Rate: 1/7 Button Rifled Muzzle Device: A2 Flash Hider Barrel: 16" 4150 Steel Chrome Lined Government Profile Manganese Phosphate Coated Handguard: Thermoplastic with Double Heat Shields Receiver Material: Forged and Mil-Spec 7075 T6 Aluminum with Type Hard Coat Anodizing Bolt Carrier: Mil-Spec Manganese Phosphate coated M16 BCG Gas System: Carbine Length with A2 Front Post Charging Handle: Standard Mil-Spec Front Sight: F-marked A2 Front Sight and Bayonet Lug Rear Sight: Removable A3 Carry Handle with Integrated Sight Buttstock: Mil-Spec 6 Position Buffer: Heavy Buffer and Spring Trigger: Mil-Spec Single Stage Trigger w/ MOE Trigger Guard Grip: A2 Style Plastic Grip Magazine: 30rd Safety Selector: Left Hand