G&P receiver wobble

[ted wins]

Hi I brought a G&P UBR custom m4 AEG and the upper and lower wobble how can I solve this ?

Any help ?

[Opossum]

Re: G&P receiver wobble

Is it a wobble at the front or back? My G&P M635 body was sorted with one of those locking pins, but my Vltor one wobbles more at the back. I guess a bit of tape added to the lip where it slides into the lower at the rear.

[ted wins]

Re: G&P receiver wobble

I would say both front and back to wobbles side to side slightly as well :s