Glock PMAG magazine extender

This adds length and purchase to the magazine, does not add capacity.  Fits Magpul PMAG for Glock, NOT Factory mags, uses the spring and floor plate that come with the PMAG.  I've made the hole for releasing large so you can use a pencil or whatever you have to depress it.   Made it to fit 9mm mags but expect it will fit 40 and 45 also.

I print with the rear of the mag on the build plate, have used PETG and ASA, both work equally well.  Worth noting:  I made this to fit tight, it should slide 98% of the way on and then need a bit of a push to drive it home.  You'll hear the floor plate snap into place when it lands.  I hold it in my hand and use both thumbs to drive it in.  Results in a super tight fit with no slop.