I have that gun and had the same problem.

May 24 2017 at 2:53 AM
Jeff C  (Login Dieker)

Response to Pic of problem area...

Its my opinion that once the problem of the arm rubbing on the receiver is fixed that the rest of the problem is the other side of the cocking arm rubbing against that tower or even the stock bolt that goes thru that tower. I shortened the bolt a bit and polished that area and lubed that side as well and it fixed the problem. I have not figured out a way to put delrin on that side but its good enough with what I did to it. It would be great to put a delrin button on the end of the stock bolt but a lot of trouble.

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