Glock 17 Metal Magazine - If you've spent any time in a gun store, you know that almost no one knows exactly what the little silver rectangle on the front of the magazine is for. During a recent Glock gunsmithing course I took, I made it a point to ask the instructor what the hell bare metal was all about. Unfortunately, I had no idea why the Glock 17 and 19 magazines have a metal window, but a quick call to Glock mom and he was able to answer my question.
It turns out that there were a limited number of Glock 17 and 19MB pistols produced with factory ambi magazines. Here in the states we only saw a very limited run of the Glock 21SF that had the new ambi magazine, especially the rare Picatinny rail version that was offered for sale for a short time.
Glock 17 Metal Magazine
When I understood how the normal journal type works, I was surprised how the ambigu unit works. Fortunately, YouTube user Customchannel recorded a quick video of him modifying a Glock 21SF hard magazine release.
Magpul Pmag 10 Gl9 9mm 10 Round Magazine For Glock 17 Pistols
While I love Glocks as much as the next guy, I really dig their 21 SF. I think I might get one to use as a control host because of its weirdness.
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