- Made in Taiwan
- Suitable for MARUI MP5K / PDW Series AEG
with M120 to M170 Spring
- Material : S303 Stainless Steel / Brass Alloy / Polycarbonate / Acetal
- Package Includes :
- Stainless Bore-Up Cylinder Head
- Bore-Up Air Seal Nozzle
- Bore-Up Ventilation Piston Head
- Bore-Up Chromium Plating Cylinder