CowCow Rear Chassis / Hammer Housing For Marui G17 & Gen 4 / G19 GBB

For Marui G17, G17 Gen.4, G19 GBB Pistol - Enhanced Hammer Housing For TM G17 amp; G19 - Fully CNC from aircraft grade 7075 Aluminum. - Enhance and smoothen the hammer amp; slide action, also improved durability.  - The strengthened structure can bear with the stronger hammer hit.  Hard Black anodized finish **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.