Anyone with feedback of recent run of Green Mountain 9mm UZI barrels?

amphibian

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I know about these old threads:
https://www.uzitalk.com/forums/inde...barrel-and-winchester-nato-no-go.92043/page-2
https://www.uzitalk.com/forums/index.php?threads/green-mountain-barrels-good-to-go.81437/page-2

Since then their Mini barrels have gone out of stock and I now I see them back in stock and still see the warning on their site that you MAY have issues with Winchester ammo.

I had one of their Mini barrels when they first came out and it wouldn't feed well.

Anyone get one of their barrels in the past year or so?

BTW, I think their .45 UZI barrels are fine, at least they have been for me.
 

Rich V

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I have 2 of them. One purchased a couple of years ago the other earlier this year. They both work fine with my reloads.
 

regalgseguy

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The GM barrel I had for my FA UZI would not work with WWB. Everything else was fine.
 

AKarms

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I know about these old threads:
https://www.uzitalk.com/forums/inde...barrel-and-winchester-nato-no-go.92043/page-2
https://www.uzitalk.com/forums/index.php?threads/green-mountain-barrels-good-to-go.81437/page-2

Since then their Mini barrels have gone out of stock and I now I see them back in stock and still see the warning on their site that you MAY have issues with Winchester ammo.

I had one of their Mini barrels when they first came out and it wouldn't feed well.

Anyone get one of their barrels in the past year or so?

BTW, I think their .45 UZI barrels are fine, at least they have been for me.
I have 2 from a few years back. Had a slight feed issue with fiocchi subs. But I think that was a feed ramp issue not the barrel
 

JohnnyBfromAZ

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I picked one up for a customer build recently (within the last year/year and a half), and was having a ton of problems with it. Rounds were feeding okay, but they wouldn't go off and would get stuck in the chamber bad enough where I would have to remove the barrel and use a ramrod to beat them out. I cast the chamber, and not only was the HS long, but there was a taper cut into the chamber, which effectively eliminated the ledge between the end of the chamber and the start of the throat- so the case mouth was effectively bypassing the end of the chamber and being squeezed inward. It was way worse with rounds that had a crimp on the case mouth. I usually only test/run SMGs with M882, but I tested a bunch of different loads to figure out what the problem was. I didn't have a 9mm reamer on hand to chase the chamber, but I used a micro boring bar to correct the chamber geometry and shorten the HS, and it worked fine after that. Really sucked though, because the customer was being a major dick about the whole thing. If you get one of these, I highly recommend checking HS with a gage and potentially reaming it out before install.
 

Vulcan762

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In late 2023 I picked up a 45 acp barrel from GM. Both function fine for me with Federal, Lawman, ammo.
 

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