CMMG kit problem

id64

id64

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Sorry about starting a different thread, but it start behaving really weird. Every mag I shot today was with ejection problems. This is really driving me crazy because when I used it first time it was OK.

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I've polished rails and adjusted rails so bolt slides on them freely and will try again maybe tomorrow. Any suggestions?

TIA
 
Last edited:
ViktorF said:
Those kits are finickity, get the walmart 333 ammo, its copperwashed and will be better for your barrel too.
Click to expand...

I agree. Try to stick with copper plated, high velocity 22lr. like winchester 333/555, federal, etc. You should find that it cycles better. Is that CCI Blazer? There could be a chance that it is the mag. Not sure how many you have.
 
see if there are any burrs on the parts my ciener kit needed some polishing to get it to work 100%

also if you have it apart any chance you could take some pics of the barrel (front part of kit that goes in chamber)

mine broke on my ciener kit (10k+rnds) and i cant get ciener parts here and cmmg looks the same....
 
UPDATE:

Cleaned and polished rails. Also, adjusted them so bolt slides freely on them with spring removed. Ran 400 rounds today trough it only with 2 small problems. I think, this is good enough to say that it's working good now :)
 
contact148 said:
see if there are any burrs on the parts my ciener kit needed some polishing to get it to work 100%

also if you have it apart any chance you could take some pics of the barrel (front part of kit that goes in chamber)

mine broke on my ciener kit (10k+rnds) and i cant get ciener parts here and cmmg looks the same....
Click to expand...

Here you go:

DSC_1106.jpg

DSC_1107.jpg
 
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