I recently picked up a 20 round CX4 magazine under the assumption that it would work in my Beretta Centurion. While it looks similar to my 92 series 20 round magazine, the CX4 needs to be slammed pretty hard to make it activate the magazine catch. Was I misinformed in thinking these magazines are interchangeable?

Thanks

I think they take px4 mags and 92 mags if you have an adapter. So you might have basically an extended px4 mag.

IIRC the CX4 has, or has had, I'm not sure if they still do, adapter kits to work with M92/96, Cougar, or PX4 magazines.

If your magazine does lock into a 92 series pistol then it is a 92 type magazine.

A couple of questions:

Is it a Beretta branded Magazine? If not the dimensions might be a little off.

Is it Loaded to full capacity? That might make it a bit hard to seat. If that is the case try downloading by one round. Leaving it fully loaded for a while might break the spring in a bit.

Magazine is unloaded and is marked as a factory Beretta magazine. Does the adapter replace the plastic dleve of the magazine?

quote:

Originally posted by DeputyCG:
I recently picked up a 20 round CX4 magazine …

I don’t believe there is such a thing- at least not from Beretta. What exactly did you buy? Is it branded Beretta? Beretta sells 92 series magazines and PX4 magazines. The CX4 will use either one, depending on which insert it has installed. But to my knowledge, Beretta does not make or sell a magazine labeled specifically for the CX4.

I can't add much from what the others have said but if you have full size 92 mags,(as it will help identify if your gun is made for the 92 mags), try putting one in the CX4 and see if it locks in without issue. It shouldn't need to be slammed in and should just slide in and latch. Sometimes if the bolt is down and/or the mag is topped off/maxed, it can be a little difficult to put the magazine in for whatever reason. I haven't shot mine in a while but it has happened before, so try inserting the mag with the slide open and see if that helps.

I purchased the magazine from someone else who got it with a CX4. After comparing it with my other factory 20 round magazine , other than the difference in finish (parkerized vs glossy) they seem identical. I think the problem is the plastic sheath on the new magazine not letting me insert it properly. Once the mag catch latches in, it seems to be fine. I’m going to try it at the range later this week to see if it feeds reliably.

To confirm, the Cx4 will take either 92 or Px4 (96 and Px4 too) Storm magazines but not both at the same time. You will need a separate magazine well and catch for each style. You could have a Px4 magazine on a 92 magwell. Check it carefully, it should say.

One caveat: Mec-Gar magazines, at least the 40s, generally will not work in a Cx4. It's a well known issue. There is something slightly different with the design and Mec-Gar won't or can't change/fix it.

quote:

Originally posted by honestlou:

quote:

Originally posted by DeputyCG:
I recently picked up a 20 round CX4 magazine …

I don’t believe there is such a thing- at least not from Beretta. What exactly did you buy? Is it branded Beretta? Beretta sells 92 series magazines and PX4 magazines. The CX4 will use either one, depending on which insert it has installed. But to my knowledge, Beretta does not make or sell a magazine labeled specifically for the CX4.

My CX4 I picked up late last year takes 92 mags. It came with a Beretta 20 round magazine, which should fit any full size or Centurion 92. Carbine works with standard 15-18 round Beretta mags, as well as the 30 round mags.

A few thoughts, as I have a CX4 Storm and a 92X along with various Mecgar and OEM Beretta mags.

Is the magazine in question a Mecgar or a OEM Beretta? Does it say "Made in Italy"? if not, it is most likely a cheap garbage mag.

Is your Centurion wearing the factory grip panels? If not, the plastic sleeve on the magazine may be hitting the bottom of the aftermarket grip panels keeping it from seating. My Beretta packaged 20 rd. mags seat easily but the plastic sleeve sits right up against the bottom of the frame and if your grip panels extend even a tad below the bottom of the frame they may cause interference.

Third is it a 92 series mag and not a PX4 mag? I don't know the physical differences between the two, but obviously they are not interchangeable.

With the above said, I will warn you that I have no luck with the Beretta 20 or 30 rd mags in either my CX4 or my 92X. They do not lock back the bolt or the slide in either of them due to the follower slipping past the protrusion of the bolt/slide hold open lever. Standard capacity and 10 rd mags from either Mecgar and Beretta work flawlessly in both, so there is a issue with either the followers or mag bodies of the 20 and 30 rd mags that make them malfunction.

I have older 20 rd Mecgar mags that do not have the plastic sleeves but instead have metal protrusions out of the mag body itself that prevent over insertion and they work flawlessly, but have not been made ever since the 20 and 30 rd Beretta magazines with the plastic sleeves have come to market.

Post some pics of your mag

PX4 mags are wider and basically larger than 92FS magazines. They cannot be put into a 92 magwell.

Post some pics of the mag and we should be able to tell you what you have.

As for fit, you might have to take a file to the plastic on the bottom of the 20rd mag, just a bit, to make it fit better.

I have a CX4 in .40 that came with 2 mags. I've lost or miss placed the paper work that came with it. I don't own either a PX4 or 92 Beretta and would like to know what the mags are. How can you tell by looking at them?

Jim

Oem mags. 92 on left. Px4 compact on right. Full size will look similar.

Not compatible. I have a full size PX4 mag somewhere, I will look for it if the op hasn’t posted a pic of his mag soon. The 92 mag goes in to my px4cc but doesn’t lock.

Thanks Chowser, that's a big help.

Jim

Update. I finally figured out the problem. My pistol has a mag guide. I have a Wilson Combat 92 and it comes with a mag guide, the plastic sleeve on the factory 20 round magazine was getting "pushed" by the mag guide. I checked the 20 rounder that came with my pistol and it had a small bit shaved off of the back end of the plastic sleeve of the magazine. I took it upon myself to disassemble the problem magazine and without the sleeve, it fit perfectly. I don't know if this is a factory Beretta part or if it was modified by Wilson Combat, bit I think I've got some time with a Dremel tool in my future. Also just to clarify, I do not have a CX4, I purchased the magazine from someone else who has one. Thank you for all the answers. I will post pics in the morning when I get back from work comparing both magazines.

I read through this quickly, so if a duplicate answer, apologies. Beretta made 2 versions, those for 92 mags and those for CX4 Mags only.