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New Build, test fired for 20 Rounds rapid fire with Geissele SSA-E Trigger. Old school Mk18 Setup! $1545 Build & consist of: Colt (C Marked) Upper Receiver, Centurion Arms C4 7" Rail, BCM Barrel Nut, Ghost Firearms 10.5 A2 Barrel, Ghost Firearms Nickle Boron BCG, Knights Armament 200-600m USMC Rear Sight, KAC 3x Rib Covers, Strike Industries Charging Handle, Remcon Carbine Gas Tube, Rare Eotech 511 in (Great physical condition, solid recticle), Surefire M952 KIT01 (Brand New Old Stock, just mounted for pics) & Surefire SR07 Switch. I will even throw in for Free a Eotech 511 parts replacement, repair kit & GG&G Cover.