The NBS AR-10 is built to the highest standards of quality and performance. It features a lightweight aluminum receiver and a free-float M-LOK handguard providing durability and resistance to wear and tear. The rifle also features a full-length Picatinny rail, allowing users to easily mount their preferred optics and accessories.The rifle also features a multi-position adjustable stock, providing a comfortable shooting experience for users of all sizes.NBS AR-10 SPECIFICATIONS Lower & Upper Receiver: Manufactured by Anderson Manufacturing Caliber: .308 Win Barrel Length: 18 inches Capacity: 20 rounds Stock: Multi-Position Adjustable Trigger: Standard Barrel Type: 4150 CMV Twist: 1:10 Weight: 8.5 pounds Finish: Hard Coat Anodized Handguard: Free-Floating Muzzle: A2 Flash Hider Gas System: Low-Profile Pistol Grip: A2* One 20rd magazine is included with this rifle. If your state/county does not allow them, it will be removed prior to shipping.