Chambered in 450 Bushmaster, these Great Lakes Firearms AR rifles feature a 18" barrel 416r stainless steel with a 1:24 twist. The heavy barrel incorporates a mid-length gas system, with 0.75 Gas Block. The barrel is threaded in 9/16x24 and is fitted with a ported compensator. Each barrel is surrounded by a 15.25" 6061 aluminum M-Lok handguard with a full-length picatinny rail on top, allowing you to attach the different accessories you may require. While this rifle features a 7075 Oversized Upper Receiver, it weighs in at only 6.4lbs.
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