COWCOW Technology Steel Hammer Set for Marui Model 17 & 19 GBB Pistol (Silver)
Precision CNC machined Stainless Steel
MAF Polishing Technology for greatly smoother operation
Durable construction prevents warping under hard use
Hammer set including hammer, sear & firing pin
Suitable For Tokyo Marui Model 17 & 19 Series Airsoft Gas Blow Back GBB Pistol

**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. 

Increasing in FPS can be achieved; however, it may require other parts to collaborate and advanced skill is needed. improper installation / fitting can shorten the life of the product.