Here’s a custom KWA erg Parts list: 1 x Retro ARMS Cylinder Set for M4 (RETRO-6637) = $35.00 1 x SHS/Rocket 14-tooth High Speed Metal Rack Piston (TT0093) = $12.00 1 x Lonex Gold-plated Motor Connectors Set (GB-05-03) = $6.00 1 x SHS/Rocket 16TPA Long High Torque Motor (DJ0005) = $31.00 1 x Retro ARMS CNC Steel Low Profile Bushings - 9mm (RETRO-6844) = $12.00 1 x AlphaWire EcoWire Plus 16 Gauge (Black) 1' (ECOWIRE-6827BLACK) = $1.50 1 x AlphaWire EcoWire Plus 16 Gauge (Red) 1' (ECOWIRE-6827RED) = $1.50 1x KWA Rear Wire Buffer Tube Kit = $35.00 1x Madbull blue spring = $10.00 1x GATE Pico SSR 3 = $20.00 Externally: Daniel defense ar15 lite rail 9” G&G crane stock (missing triangle back piece) Real Magpul AFG2 PTS battle comp All parts are professionally installed. It’s shimmed, cleaned, greased, radiused, and AOE corrected. Problems: Needs new bucking Double fires on semi with an 11.1v (Might need new cut off lever or simply install a heavier spring) Asking $450 shipped obo SUREFIRE AND SCOPE NOT INCLUDED! Trades will be a DSG M4, IN GOOD CONDITION