Durable aluminum alloy and heavy duty steel construction
    Adjustable trigger spring
    Customizable tuning of the trigger sear
    Anti-roll hammer pin prives stability and reliability
    Comes with pre-installed bolt release
    Designed for more durability and reliability than stock bolts
    Comes with reinforced T8 nozzle guide
    Drop-in upgrade requires little to no modification
Main Material : Steel /Aluminum
Compatibility: CYMA CGS series GBB  or  Tokyo Marui MWS series GBB