M*CARBO Brotherhood

PMR30 red dot FTF issues

I have the m-carbo recoil spring upgrade installed, along with the keltec fastfire mount.

The slide appears to not be going back all the way, and thus failing to feed next round intermittently.

I am thinking of trying the original spring assembly to see if that fixes it.

Any hints?

PS - is there a sensitivity on how tight the slide cover is torqued?


yes there is over torque will cause binding. loosen/vibra-tite/torque to spec.