50 round mags

[hcook]

Is there anything that can be done to make these mags work reliably? I tried out one of my 50 rounders on another Uzi, and it was terrible. Would fire about 4 rounds and stop. We put other mags in (32 round IIRC) and it didn't miss a beat.

Thanks in advance for your help.

Hans

[JClem555]

Short answer: No. If you want a higher capacity than 32 rounds, you should get the 40 round ones that Vector sells. They are converted Argentine military magazines. They sometimes need a little fitting, since they were converted to work in an UZI. Generally, they are pretty good, better than the 50 round junk, but not always perfect. However, Vector will let you send it back till you get one that works. For 25 round or 32 round mags, buy IMI magazines and you are good to go.

[tommygun2000]

Find whats binding. The follower might be binding or the spring tension might be not enough to lift a column of 50 9mm rds.
It sounds like the spring tension cant lift the ammo fast enough to keep up with the cyclic rate of the gun.
This is a common thing with large machinegun ammo mags like the BAR and other 30 cal cartridges. The stuff gets too heavy after 20 rnds so that why most of them use 20 rnd mags to insure reliability.

You could try adding an additional portion of spring to see if it helps. I'd try this just to experiment and satisfy my curiosity.
Maybe use two 25 rnd mag springs or a 25 and a 32.

Also, see if the inside of the mag body is smooth and no dents
and or see if there is signs of abrasion on the follower, if so lube the hell out of the mag with a light coat of oil to see if it relieves any possible binding.

My .22 kit mags worked much better with a shot of Break Free CLP just before firing.

Keep us posted.

[sigfla]

There is an article on the net about reliably tweaking a 50 round mag. As I remember it the tweaks took some time but once done the guy said his were 100%.

I may have even posted the link to it on here in the past but I am not sure. If you find it please post. If not send me a e mail and I will spend a few minutes trying to find it again.

[treedawg]

USA made the 50's. Need I say more???

TD

[KarlPMann]

USA mags are CRAP! Use them for photo ops. Karl.

[JClem555]

The only post I have ever seen about that was here:

http://www.funsupply.com/Firearms/usamag.html

It says:

The USA mag fix is simple. First, TRY to load 50 like it says it'll hold. Get past 20? Didn't think so. Take the mag apart, and clean it. Reassemble. Next put the mag into a vise, front to back on the jaws, and squeeze it slightly (no gorilla action), slightly squeeze the mag the entire length, then retry to load as many rounds as you can. If you get all 50 in, try to insert it into your UZI. If it is tight, put it back into the vise, front to back, and lightly tap SIDES with a nylon/plastic hammer. Try to reinsert it into your UZI. If it does, recheck to see how many you can load. The UZI mag loader helps some, but my mags I can load using my left thumb with no problems (All 50) If you plan on using the UZI mag with a Colt 9mm AR, you need to cut a slot into the rear of the UZI mag so it matches with the factory Colt. This way, you can have one hi-cap mag for two weapons. p.s. the USA Colt 9mm 50 round and Uzi 50 round mag are the one and the same, both have the AR slot cut, but they use different part numbers so they can get the premium price because it fits "Colt". If you have any problems with this, email me back, and I'll get you on the road to 50 round heaven ASAP.

That may allow you to actually get all 50 in there...but does it work, and in full-auto??? If someone on the board actually tries it, let everyone know...

I gave up on the 50 rounders long ago. I did try to tweak one. What I noticed was that the follower in the mag was too short front to back, or in other words the machined tolerances were terrible, and way too big. Anyways, what happened was that as more than about 20 rounds were put in the mag, because of the extra room the follower has to move front to back, everything gets pushed downward and faces straight out toward the front of the mag rather than slightly upward at an angle as it should be to properly load out of the mag and into the chamber. You rack the bolt, and "clank" it gets stuck because of the way all those cartridges are stuck in there. If it actually does work, and loads anything in the chamber, you might get the typical 5-10 shots then a jam. I ended up changing the follower, messing with spring, etc,....and I saw the futility of my tweaking, and bought some 40 rounders...

[sigfla]

Yeah that is the article.

[Dan0341]

I've posted this in the past. In case it hasn't been seen, here it is again:

I've heard from many people that the aftermarket 50 round mags are absolute junk (although I cannot confirm this myself). After reading the negative posts regarding the aftermarket 50 rounders, I thought I'd try my own. Here's a pic of two 25 round mags migwelded together. I can load 54 rounds into the mag, but it will only shoot with about 36 rounds reliably. I've worked for hours and tried numerous things to make it work with 50 rounds, but could not make it 100% reliable. I believe it comes down to the issue of the mag body being straight. The rounds dive into the front of the mag when loaded to capacity. I'm pretty sure that if the mag was curved, it would prevent the bullets from nose diving into the mag or the bottom of the feed ramp. In any case, I can get 36 rounds (sometimes a few more) to work great.

My thinking is this: if I can't get it to work with IMI mags (they're about as reliable as you can get in my experience), then no 50 round Uzi mag will work reliably. I'll just stick to my 40 round mags from Vector. They work extremely well.

Dan

http://home.ix.netcom.com/~brownhen/_uimages/Uziw50roundmag.JPG

[dan d.]

Get one of those asian mp5 mags, so you don't have to feel guilt, and weld in place of the second 25rd uzi mag. Maybe that would work.

[tony k]

Originally posted by dan d.
Get one of those asian mp5 mags, so you don't have to feel guilt, and weld in place of the second 25rd uzi mag. Maybe that would work.

It might work, but it'd be illegal, according to BATF's October 2000 ruling. When you weld together two mags, the resulting mag must still work in all firearms for which the component mags were designed.

[az paul]

I had enough problems with the 50's in the A & B models, so I've never even bothered to try them in the FA. The Vector 40's work great.

az paul

[dan d.]

Shucks! forgot about that Tony. Looks like the only option now is bending an uzi mag into the shape of a boomerang. Good luck Dan0341