Description
Gemtech’s threaded rear mount adapter (MPN 12175) is for use with GM-9 and MULTIMOUNT suppressors on fixed barrel carbines and SMGs. It uses a 5/8-24 mount and is intended for .300 Whisper and .300 Blackout carbines using SUBSONIC AMMO ONLY.
Key points
- 5/8-24 threaded adapter for compatible Gemtech suppressors.
- Built for fixed barrel carbines and SMGs.
- Designed for subsonic ammo use only.
- Most handguns require a Gemtech LID mount for proper function.
Specifications
| Caliber | .300 AAC Blackout |
|---|---|
| Thread | 5/8-24 |
| Ammo requirement | SUBSONIC AMMO ONLY |
| Use | Fixed barrel carbines and SMGs with GM-9 and MULTIMOUNT suppressors |



