Hey guys/people more knowledgeable than me,
I picked up a well (police) used Glock 17 Gen 2 that I've cut down to a 19 size. Love it. Well, today I thought I'd bevel the magwell a little bit from the hard transition of just having it cut flush. I got a little carried away, and beveled it on the sides about 1/2" up inside. It is smooth and mag changes are a breeze, but I'm a little concerned now about mag fit in the magwell. I remember when I got it mags fit a little more loosely than other pistols I was more familiar with, some of that might just be a Glock thing. But now maybe I added to it. If I push the magazine base around when the magazine is inserted into the pistol, I can wiggle it about 1.5mm side to side and about 1.5mm front to back. The top of the magazine, more secured than the baseplate due to the magazine catch, obviously moves a smaller percentage of that.
I didn't think much about it when I was doing it, but now it makes sense to me that since it was a looser fit to begin with, the magazine was a little more tolerance-sensitive of the opening at the extreme bottom vs a magazine that was held in place more tightly all along the entire magwell of the pistol. I'm hoping I didn't fubar anything. I will try to hit the range soon to run some rounds through it for a function check, but thought I would also get some more-expert-than-me thoughts on Glocks and magwell tolerances.
Thanks for any advice/admonishment.
-Dave