The Balystik CNC upper for MTW M4 will allow you to create your own custom upper while keeping the lower part of your replica unchanged, which opens up many preparation possibilities.
- Material : 6061 aluminum with hard anodize
- Compatible with MTW M4 replica
- Threading compatibility : AEG / GBB / PTW / MTW
This upper receiver is a third-party product built by Balystik and designed for MTW.
