Gunboards Forums banner
1 - 20 of 31 Posts

·
Registered
Joined
·
416 Posts
Discussion Starter · #1 · (Edited)
Ok, we M57 owners all know how hard it is to find replacement magazines and when we do, the asking prices are very expensive.
I recently came across a M57 that had a non Yugo mag in it. When I pulled it out, I saw it was a CZ52 magazine. When I put the CZ52 mag side by side with an original M57 mag, it seems that the CZ52 and the M57 magazines are basically the same dimensions. The only thing keeping the CZ52 mag from being a direct fit is it does not have a mag catch slot in the side of the mag body. (CZ52's have a heel release)
So, I put together this tutorial so you can get some extra mags that are easier to find and cheaper.
First thing you need to do is check the fit of the cz mags to your pistol. Most of the cz mags I had were a snug fit. The cz mags sometimes are a little longer from front to back. Light tapping with a brass hammer on the front edge of the mag, from top to bottom is all that was necessary to get the mag to drop free when released from the gun.



To cut the mag catch hole in the cz mags, you need a sharpie marker to mark where to cut, a dremmel with cut off wheel and de-burring bit and some emmry cloth.

First, I put the original m57 mag side by side the cz52 mag and with the sharpie, marked where the cut should go. (mark a little lower to start)



Then I cut the slot, straight across on the top side and then bevel a little downward. Don't cut too much to begin with, test fit and enlarge as nessesary until you get the fit you want. (Warning- if you cut too high up on the mag, the mag will set too low in the pistol and the slide will not pick up the rounds. Ask how I know!)



After you get the cut where you like it, use the de-burring tool to remove any rough edges and the emory cloth to smooth it up.



I check feed and function with dummy ammo.



Touch up the cuts with cold blue and you are done.

 

·
Copper Bullet member
Joined
·
603 Posts
Good to know. Thanks.
 

·
Premium Member
Joined
·
234 Posts
MODIFYING A CZ-52 MAGAZINE TO HOLD 9 ROUNDS (+1 from 8)

Phil, of SKSboards, writes:

Don't go blind, wear safety goggles.

1) First thing to do is unlock your magazine floorplate & slide it forward a little. About 3 mm should do.

2) Load up the magazine with 9 rounds and look to see if there is any coil overlap in the magazine itself. If there is, then this home-brew Hi-cap probably isn't a good idea.

3) With 9 rounds in the magazine, there will be about 6mm of the rear portion of the magazine follower sticking out below the floorplate. Measure this & keep a note of how much is sticking out.

4) Take 1 round out of the magazine to restore it to the original 8 rd capacity then, with the mag upside-down, carefully remove the floorplate & spring.

5) Measure the depth from the bottom of the magazine to the bottom of the rear part of the follower inside the mag. This should be 5mm if your mag followers are the same size as mine.

6) Add the 5mm to the previous measurement of mag follower and you have the amount you need to cut off in order to fit the extra round.

7) Cut that length of the mag follower off and add a slight bevel as in the original to prevent the spring from hanging up on the follower.

8) Smooth out all the cut edges.

9) Re-assemble the magazine.

Now I loaded up the magazine with 9 live rounds then cycled them by hand through the weapon HOWEVER, I had a broken FIRING PIN which was OUT OF THE PISTOL at the time, so I had no risk of negligent discharge. I recommend doing something similar before hitting the range just to make sure you have the snags worked out of the magazine and it cycles properly. But do it without a firing pin if you hand cycle it at all. With this modified magazine alone, I shot several boxes of S&B FMJ with no problems at all.

* CZMag01.jpg: 9rd magazine, without spring or floorplate
CZMag01.jpg

* CZMag02.jpg: Mag follower, afterwards
CZMag02.jpg


Go to the site http://thegunwiki.com/Gunwiki/ProcModifyCZ52MagCap9 to see the pictures
 

·
Registered
Joined
·
374 Posts
So how did this work out for you, Ron ??

A range/test report, please............Before I start cuttin' on my mags...........

My wife cringes whenever I ask; ".......Babe, can ya get me the dremel outta the garage, please......."
 

·
Registered
Joined
·
374 Posts
Bench test works great, racking mags full of rounds out manually but I have yet to live fire test it as the snow here is still 2+ feet deep and access to my shooting area is not possible.
It was 78 degrees in Southern California today !!!...........'bout the only thing California still has going for it is the weather.........Everything else sux..........
 

·
Registered
Joined
·
416 Posts
Discussion Starter · #9 ·
Live fire test this weekend.
Using 2 different M57 pistols, all the modified cz52 magazines worked properly. I tested each magazine with 8 rounds of live fire in each pistol and they worked as perfectly as the originals.
 

·
Registered
Joined
·
2,356 Posts
Hello PolishRon and Mastiff. YOU GUYS ROCK!!!! I've wanted to get one of the Yugo Toks for sometime but the lack of mags changed my mind. CZ mags are all over the place and are fairly reasonable. Now I have to start looking for a Yugo Tok! Thanks again for the idea. Its good to see that people still help each other out on here.
 

·
Copper Bullet member
Joined
·
947 Posts
Modified 3 brand new ones they work great, I ground and sanded the back spine of the mags instead of hammer wackin.
 

·
Copper Bullet member
Joined
·
947 Posts
I got mine at the same place. I did see (shotgun news?) someone having used ones for about 14.00$
 

·
Silver Bullet member
Joined
·
32,030 Posts
Would they still work in a CZ-52 afterwards? Having a dual-use magazine would rock!
 

·
Copper Bullet member
Joined
·
947 Posts
Cheaper than dirt lists the CZ52 mags for 12.97$ .
If they have them in stock .
 
1 - 20 of 31 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top