Great Lakes Firearms & Ammunition AR-15 Rifle in Black Cherry. With the full length Picatinny rail on the optics ready receiver and MLOK handguard you can mount the optics, lights and lasers of your choice on this beauty. The 16" 415R stainless steel barrel is threaded for the 1/2 x 28 custom GLFA muzzle brake. Since the rifle is chambered in .223 Wylde you can shoot either .223 Rem or 5.56 NATO without sacrificing accuracy or worrying about pressure issues. A 6-position collapsible stock gives you the ability to adjust the stock for a custom fit.