Its to prevent the top/first round's extractor groove from snagging on the plastic web that seperates the mag well from the backstrap when loading a fresh mag. I notice it does impede the mag from dropping free easily but also makes tactical mag reloading smoothler/quicker with zero chance of the snag issue. I just recently, after 15+ years put one in....Jury still out on the pros vs. cons on it though....just wanted to buy something that day

I think they are 'un-Glock-ly.'

The only beauty a Glock is capable of lies in it's simplicity. They are built to be purely functional, with no frills.

It's like putting fender skirts on a Volkswagen beetle.

I've got a Jentra plug in my G23, never had any problems with it at all...snapped in easy, its not loose at all and its never come out. Honestly, I forget its there unless I see a post like this specifically asking about it

i'm glad i caught this thread at the top or i might have thought i was in an adult chat room the "butt plugs"are simply cosmetic like the girl friend getting "vagazzled"and about as useful.cute, but useless.

Originally Posted by 4X4SNEAK

I just re-certified as a Glock Armorer. Glock does not recommend the plugs. Their opinion is that it may trap debris inside the fire-control assembly. They would prefer that debris flow freely out of the gun.

So what your saying is that that hole is meant as an exit only and not meant for things to be put in there............

RCG

Received my Gen4 Grip Plug for my Glock22 yesterday and it works great & looks neat to boot. (ilovemyglock.com) is the only place I have seen them available as of now. When you first try to put the plug in, the lip will catch on the frame but all you have to do is wiggle it a little and it will slip into the frame and next thing you want to do is line up the hex screw hole and tighten but not too tight because it is plastic so you can strip the threads. I am using mine with the medium backstrap installed.

I have plugs in all my Glocks G22,G30 and G32 except for my G19 which has a lock there that came with the gun. I bought the gun used, although it looked unfired and I assume Glock put the lock there.