Great Lakes Firearms Semi Auto Rifle, 223 Wylde, 16" Threaded Barrel, 30 Rounds

Action: Semi-AutomaticAmbidextrous Safety: NoBarrel: 16 inch, 1:8 Twist, Heavy Barrel (HBAR) Either 416R SS or 4150 CRMOV Nitride, 1/2 x 28 threadsCaliber: .223 Wylde (Shoots both .223 REM and 5.56 NATO)Feed Ramps: M4Finish: CerakoteFrame Material: Aluminum 7075Gas System: 0.750 Gas Block (Black Oxide) and Carbine Gas TubeGrip: Mil-spec, PolymerHandguard: 15.25" Aluminum 6061 Full picatinny railMagazine Capacity: 30 RoundMags included: 1Muzzle Brake: Included Designed to be 6 degrees forward, wrench tightened w/o LoctiteSights: NoneTrigger: Milspec, 5.5-6 lb pullUpper: 7075 UpperOverall Length: 33.25"Weight: 6.8 lbs.