- For GHK M4 / AR GBB
- CNC machined aluminium made with black anodized finish.
- Providing a greater customization possibility and a wider range of barrel lengths to choose from.
- 5.1" length for GBB-180mm inner barrel.
- 3.9" length for GBB-150mm inner barrel.
- 2" length for GBB-100mm inner barrel.
- All outer barrels are 14mm CCW thread with M3x4mm set screw for alignment.
- All outer barrels are also for AEG or other same spec of outer barrels to extended.
- For Airsoft Only.