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?

 

[Marty McFly]

How many threads are you going to post about the same thing?

 

[Kgordon4]

Gotta cast a wide net haha

 

[Marty McFly]

 

[Kgordon4]

Sorry man Im new to the forum, just looking for some help

 

[jayhitek]

I think it's been said before on other posts..
But, There's diagrams online that tell you where to cut the mag release slot.
And unless you're going to weld in some spring steel. You won't have a last round bolt hold open.

 

[Kgordon4]

I did find those diagrams online and talks about a mag block to help with the cut
( couldnt find one for sale). I was hoping to find someone locally that had some experience doing this so I don’t mess up my mags

 

[The Anchor]

Sorry man Im new to the forum, just looking for some help

rumor has it that if 5 threads started on this forum, with same title, by same author will conjure up the mythical Beetlejuice gunsmith AI expert, who will then visit you , and answer your question.....good luck!

 

[Yotacrawler]

There are videos out there about it as well. This one I watched some of, he’s using a mill and shows the info you need. He also says the mags are heat treated.

View: https://m.youtube.com/watch?v=xBe3GYP5f2M

 

[Kgordon4]

There are videos out there about it as well. This one I watched some of, he’s using a mill and shows the info you need. He also says the mags are heat treated.

View: https://m.youtube.com/watch?v=xBe3GYP5f2M

I did find these videos and the diagrams for the cuts needed, my issue is the tools necessary to complete it accurately without messing up my mags. I don’t have experience doing it, so I was hoping to find someone who could give me a hand with it

 

[Kevin_NH]

Just 3D print the jig (or pay to have it printed by Shapeways).

Be aware that there are two cuts needed, material removed at the top to clear the bolt catch:

These threads Glow!

ROFL. Magazine "repair" is legal, even in Mass.

 

[Kgordon4]

Just 3D print the jig (or pay to have it printed by Shapeways).

Be aware that there are two cuts needed, material removed at the top to clear the bolt catch:
View attachment 875934View attachment 875936

ROFL. Magazine "repair" is legal, even in Mass.

Thank you for actually giving some helpful feedback I will look into printing that jig

 

[Tallahassee]

View: https://www.youtube.com/watch?v=HoSLgZIGxFA


Don't worry about screwing up your mags. The first one I did was messy as all hell, and ugly, still worked fine.

 

[Tallahassee]

How many threads are you going to post about the same thing?

 

[Marty McFly]

View attachment 875958