This upper receiver is not only from GLFA's best selling rifle, it's damn good looking. It's extremely accurate, afforable, and made in Michigan! CALIBER: .223 Wylde [Accepts both .223 Rem and 5.56 NATO ammunition] ACTION: Semi-Automatic BARREL: 16"" x 1"", 1:8 Twist, 1/2 x 28 Threads, Carbine Gas System, .750 Gas Block, M4 Feed Ramps, Heavy Barrel, Available Nitrided or Stainless Steel HANDGUARD: 15.25"" Aluminimum M-Lok OVERALL LENGTH: 36.5" Mfg: Great Lakes Firearms And Ammun
