- Highlighted features
- Stainless Steel material with CNC machined
- 4 buffers for modification to shorten the cycling
- Include Enhance Recoil Spring
- Enhance the reaction force to speed up the blowback cycle
- suitable for Umarex G19x GBB

**Important Notice**
It may has a condition that your pistol cannot feed the BB bullet due to lightweight gas supply. You just simple remove a spacer to solve the issue. Alternatively, you may consult your gunsmith for advancing fitting to solve this issue as well.