SPIDER 2000 ITEM #Mae of Paris 1, Muzzle Plug ., Micro-Polished, Striker O-ring Aerospace Aluminum . Barrel O-ring Barrel muzzle Brake #1. Bolt Pin 3. Ball Stopper 2z, Bolt Screw 48. Detente Cover 230, Disconnect Lock Pin Screw 23E, Quick Disconnect T-Pin = 85, Receiver 244, Sight All Screw 2. MIMI Grp #L. Low Pressure Chamber 25 Striker Spring a3, P Rack . Orin #015 80D 264, Striker Buffer aE, Nut Screw aeE, Naive Spring 27, Sucker Bering Guide Screw screw with washer” 1.