Bertfish
Throw bread on me
Bought a CMMG .22 LR upper receiver for an AR a few months back. Read a lot of good reviews and thought that it'd be fun for me and the girlfriend.
It is having a constant issue with failing to go completely to battery. Always seems to happen on the second to last or last shot in the magazine (I have one CMMG magazine that came with the upper). The bolt will only be out of battery by about 1/16th of an inch which obviously prevents it from firing.
I did some googling and found that some folks CMMG uppers hang up on their bolt catch which would take some inertia away from the bolt and could cause this issue. I dressed the top of the bolt catch up a bit with a file but it hasn't helped.
Any suggestions on what else I could try? It's awful suspicious that it only seems to happen when the magazine is nearly empty.
It is having a constant issue with failing to go completely to battery. Always seems to happen on the second to last or last shot in the magazine (I have one CMMG magazine that came with the upper). The bolt will only be out of battery by about 1/16th of an inch which obviously prevents it from firing.
I did some googling and found that some folks CMMG uppers hang up on their bolt catch which would take some inertia away from the bolt and could cause this issue. I dressed the top of the bolt catch up a bit with a file but it hasn't helped.
Any suggestions on what else I could try? It's awful suspicious that it only seems to happen when the magazine is nearly empty.