ericthered
UZI Talk Supporter

- Joined
- Jun 19, 2020
- Messages
- 364
I used a cmmg conversion (for 5.56 barrel) with my ss. The adjustable trip is adjustable, just it is a terrible design. The adjustment is made by unscrewing the screw that is in the milled metal part facing toward the front of the gun. It is a micro screw with a micro nut for the keeper. You have to unscrew it until it has enough distance to push the safety lever. It is a terrible design.I used the steel GMR steel cam, GMR 22 plastic trip and 22 GMR plastic lever to make the dedicated 4.5" suppressed barrel Borebuddy upper 22LR function.
The metal Borebuddy adjustable SS trip did not function, and its not adjustable.
The GMR bolt weight would not function with any combination of W weights.
The GMR steel lever did not work with the BB 22 kit.
I have a rifle barrel. I used the heavy weights, the charging handle insert, heavy ejector spring, and the buffer plug. It was pretty necessary as I was getting terrible gas vent from the conversion. The velocities and accuracy really sucks from the conversion, but with hot enough ammo it runs really nice! 10/10