Specifications: Action: Semi-Automatic Ambidextrous Safety: No Barrel: 16 inch 1:10 Twist - Either 416R SS or 4150 CRMOV Nitride 9/16 x 24 threads Caliber: .350 Legend Feed Ramps: Modified M4 Finish: Cerakote Frame Material: Aluminum 7075 Grip: Mil-spec Polymer Magazine Capacity: 5 Round Mags included: 1 Muzzle Brake: Included - Designed to be 6 degrees forward wrench tightened w/o Loctite Upper: 7075 Upper Gas System: 0.750 Gas Block (Black Oxide) and Carbine Gas Tube Sights: None Handguard: 15.25" Aluminum 6061 - Full picatinny rail Trigger: Milspec 5.5-6 lb pull Overall Length: 33.25" Weight: 6.4 lbs