Modifying preban uzi mags for AR9 colt lower

[Kgordon4]

looking for some help with modifying my preban uzi mags to work with my spike’s tactical AR9 colt lower. Anyone do this in the Worcester MA area preferably?

 

[Uzi2]

Get your "WECSOG" in gear and just do it! There's barefoot, pajama wearing third world ragheads making entire working guns over campfires. Surely you can make a simple measured cut in an existing magazine.

You don't need a mill, you can use a Dremel, a file a scribe and an accurate measuring device.

I've done a few by hand and they worked fine.

 

[Kevin_NH]

Get your "WECSOG" in gear and just do it! There's barefoot, pajama wearing third world ragheads making entire working guns over campfires. Surely you can make a simple measured cut in an existing magazine.
You don't need a mill, you can use a Dremel, a file a scribe and an accurate measuring device.
I've done a few by hand and they worked fine.

This. There isn't much to the process.
No reason to be nervous about screwing up, milsurp "ok/good condition" mags run about ten bucks each.