The Bolt CNC aluminum piston is constructed out of aluminum for durability with the B.R.S.S. recoil system but with a steel piston rack to provide longevity. Aluminum ported piston head with an slightly over-sized O-ring provides proper air seal to produce high output velocity. These parts are specifically designed to work with BOLT Airsoft Guns but are also compatible with other TM type gearboxes
- The Ultimate In Durability!
- CNC Aluminum Piston Body with Weight Reduction Cut-outs
- Uni-directional flow CNC Aluminum Piston Head
- Over-sized Piston Head O-ring
- Full Steel Teeth Piston Rack