Willing to trade with : Tokyo Marui Recoil Shock 416C Real Sword SVD TM MWS M4 GBBR Cool HPA build G&G M14ebr 3 mags DP CQB valve for lowering FPS to sub 350 Angle custom charging handle(smoother pull) 16 to 14 negative muzzle adapter Sightmark PEQ box The replacement parts can make the gun last forever. Replacement parts: Jet valve * 2 Main seal Piston spring * 2 Nozzle Pins