Disclaimer and warning.....this is a comment about a GLOCK
I had to do this (make a modification) to one of the parts in my early version Glock 36, as the gun would not feed properly. (live round at the top of the magazine was hitting the frame, causing stoppages/failure to feed)
My observations were that the magazine was not being held in place high enough, because of too much gauge (open space) above the shelf on the magazine release. The amount of gauge at the location....space between where the magazine sat locked and undisturbed by me on top of the mag release.......and the magazine's position when fully inserted into the grip frame with pressure added at the bottom of the magazine (by me) .... this space worked out to approx. .070". The resulting slightly lower position of the magazine enabled the live round in the magazine to crash into the frame in front of the magazine instead of the lower part of the feed ramp. A new OEM mag release did not fix the issue, and the space was still evident.
After adding a shelf of material (Marine Tex Epoxy and insert) to the top of the magazine release, where it interfaces with the cutout in the magazine, and trimming this material to .060", all of the feeding problems went away. Doesn't sound like much, but in a sub-compact pistol design, small errors become huge.
The bottom line is, you may be able to solve your problem by making the modification you indicated. Not a perfect solution perhaps, but a solution.
BTW, since Glock management thinks that it has actually achieved "perfection", and are not still "striving" for such an illusive and unachievable goal, they had no interest in my observations.....and never provided me with any support regarding this persistent, well documented malfunction in my model 36. (compact .45) Apparently, the problem has been solved, because the 36 is still a popular model in their lineup.
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Ret. LE, FA Instr, S&W Armorer
Last edited by armorer951; 08-11-2018 at 01:44 PM.
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