Product Overview
Amplify the blowback action on your Maruyama ISO 556 with this Enhanced Valve Knocker from Waldo Dynamics. The cycle on the ISO 556 can be weak, especially in the winter. This upgrade part is optimised to increase the amount of gas during firing and increase the felt recoil without having to use higher pressure gas.
Features
- Increases felt recoil
- Improves cold weather performance
- CNC machined
- Durable low friction finish
