Guarder SP120 Full Tune-Up Kit for TM M4-A1 Series (FTK-40)
SP120 Spring (Oil Quenched/Tempered Si-Cr Alloy Steel Wire)
Polycarbonate Piston
Air Seal Nozzle
Ball Bearings Spring Guide
Polycarbonate Ventilation Piston Head
Stainless Cylinder Head
Lucid Chromium Plating Cylinder
Original Type Steel Gear
Enhanced Tappet
6mm Steel Bushing
Shim Set
