KWA KM4/LVOA Krytac 30k Motor Shs piston Shs cylinder head Prommy purple bucking Wide bore barrel Deans conversion KWA two piece hop up KWA KM4 Body KM4 SR Nozzle KM4 Feed Ramp LVOA-C Rail LVOA Warsport Muzzle LVOA barrel MagPul PTS EPS-C stock $576 new Selling for $390