Endomag blew up

[TacticalSpeed]

I have been using Endomags for a bit now (Purchased a 3 pack), in more than 1 firearm, until yesterday...

First, one of the Endomags would not function right so I stopped using that one. Then another was so defective that it blew up the PMAG it was in. Please see the link of photos below for what happened at the range yesterday.

https://imgur.com/a/g2nImGb

I am lucky the lower receive did its job and kept the chaos in the mag well. I could have been severely injured...or worse...

More than one person, range officers and armorers, at the range confirmed the Endomag was to blame.

 

[Barbaroja]

Prehaps im not understanding what happened. Could you explain it a little better? Did the gun fire out of battery? How is the magazine to blame?

 

[berettaprofessor]

What Barbaroja said. I'm not defending Endomag, but it can't blow a gun up unless it somehow contributed to an out-of-battery fire. That's a hot ammo or AR-15 function problem, not a mag problem. In fact, unless there's something I don't understand, that Endomag may have limited the damage over a regular PMag....you don't know.

 

[kje54]

Prehaps im not understanding what happened. Could you explain it a little better? Did the gun fire out of battery? How is the magazine to blame?

Endomags are inserts to make an AR15 mag work with say 9mm ammo. To me that's an accident waiting to happen. Most likely the insert failed creating an out of battery fire.

 

[TacticalSpeed]

What Barbaroja said. I'm not defending Endomag, but it can't blow a gun up unless it somehow contributed to an out-of-battery fire. That's a hot ammo or AR-15 function problem, not a mag problem. In fact, unless there's something I don't understand, that Endomag may have limited the damage over a regular PMag....you don't know.

I didn't say the rifle blew up. The rifle is fine. The Endomag caused the issue
Endomag is an insert for PMAGs to enable one to fire 9mm ammo.

I am switching to an AR9 lower and never using Endomags again. I've already contacted the company, Mean Arms.

 

[TacticalSpeed]

Endomags are inserts to make an AR15 mag work with say 9mm ammo. To me that's an accident waiting to happen. Most likely the insert failed creating an out of battery fire.

That is exactly what happened

 

[Barbaroja]

That is exactly what happened

So it did fire out of battery?

 

[kje54]

That is exactly what happened

Initially I was confused, didn't know what an Endomag was and had to look it up. That may be why some are wondering why you're blaming the magazine........ It's not the magazine it's the insert.

 

[TacticalSpeed]

Initially I was confused, didn't know what an Endomag was and had to look it up. That may be why some are wondering why you're blaming the magazine........ It's not the magazine it's the insert.

Where did I blame the PMAG? The whole point of the thread is the Endomag failed...

 

[Mauser lover]

So, the gun is firing out of battery? Is the bolt hanging up on the mag somehow?

 

[kje54]

Where did I blame the PMAG? The whole point of the thread is the Endomag failed...

EndoMAG, If one didn't know what it was one would automatically assume it was a magazine making it appear you were talking about two different magazines and I couldn't figure out how one mag blew up the other. That's what was confusing.

 

[GNP]

The video shows that it's required to fit the Endomag insert to the upper...does each insert have to be fit to a particular upper?

 

[TacticalSpeed]

The video shows that it's required to fit the Endomag insert to the upper...does each insert have to be fit to a particular upper?

No

 

[GNP]

 

[buck460XVR]

Where did I blame the PMAG? The whole point of the thread is the Endomag failed...

I don't see an "explosion" only a split mag. Like a strain from too much spring or maybe some previous incident where the mag was subjected to some sort of damage. I wonder if the paint on the mag may have weakened it. From the pics, the damage seems to be in the same area as the paint job. Many spray paints will soften plastics.

 

[TacticalSpeed]

I don't see an "explosion" only a split mag. Like a strain from too much spring or maybe some previous incident where the mag was subjected to some sort of damage. I wonder if the paint on the mag may have weakened it. From the pics, the damage seems to be in the same area as the paint job. Many spray paints will soften plastics.

There was an explosion of sorts...in the mag well. That's what prevented shrapnel from going everywhere.

Yet every other mag I have painted, or put Duracoat on which is what this is, never broke.

 

[berettaprofessor]

Initially I was confused, didn't know what an Endomag was and had to look it up. That may be why some are wondering why you're blaming the magazine........ It's not the magazine it's the insert.

I wasn't confused; I have two Endomags and know perfectly well what they are and what they do. I also know the instructions have a number of tips on breaking them in and modifying them to improve function. I have a hard time believe a properly-fitted endomag would itself cause an out-of-battery incident.

See the video posted by GNP!

I haven't had issues with mine, however, I can't say each has a 1000 rounds through them. Maybe 200 apiece.

 

[kje54]

I wasn't confused; I have two Endomags and know perfectly well what they are and what they do. I also know the instructions have a number of tips on breaking them in and modifying them to improve function. I have a hard time believe a properly-fitted endomag would itself cause an out-of-battery incident.

I haven't had issues with mine, however, I can't say each has a 1000 rounds through them. Maybe 200 apiece.

I was because I'd never hear of EndoMag before. And I bet I'm not the only one.

 

[TacticalSpeed]

I wasn't confused; I have two Endomags and know perfectly well what they are and what they do. I also know the instructions have a number of tips on breaking them in and modifying them to improve function. I have a hard time believe a properly-fitted endomag would itself cause an out-of-battery incident.

See the video posted by GNP!

I haven't had issues with mine, however, I can't say each has a 1000 rounds through them. Maybe 200 apiece.

Glad you haven't had issues. Clearly, that does not mean no one has.

 

[Slamfire]

Thanks for the video, I never heard of Endomag either.

There was an explosion of sorts...in the mag well. That's what prevented shrapnel from going everywhere.

It is apparent the OP is not able to describe the incident in terms other than "big, badda, boom!". And is unable to articulate any useful information about the event other than "magazine broke!".

Let me assume that there is something inside the Endomag insert that makes incidental contact with the primer. Anything having incidental contact with a primer can, and has, caused cartridge ignition, even though the round is not chambered. I have a hard time believing an out of battery slamfire, unless the cartridge is orientated such that the front of the bolt could make incidental contact with the primer.

Of course, given what we were told, that is "big badda boom!" and "magazine broke!" there could be missing information that leads to a different fault analysis.

An application of X-Ray soap would clean up the confusion.

 

[H&R Glock]

Endomag's are not compatible with all AR/AK 9mm bolts. What brand is your 9mm upper?
If it's an ARStoner you are in trouble. BTDT! I also had an out of battery fire.

 

[lightman]

I was because I'd never hear of EndoMag before. And I bet I'm not the only one.

You're not alone, I had to google it. Never heard of it before. It just don't sound like anything I want to do with.

To the OP, glad you were not injured. Hopefully it didn't damage your rifle.

 

[greyling22]

If mean arms doesn't want them back, I'd be delighted to take them off your hands. Most of the issues I've seen with the Endo mag involved the plastic ejector interacting with the bolt.

I run mine with a cmmg delayed blowback system where the ejector is built into the bolt fase still, so I don't use the endomag ejector at all.

 

[12Bravo20]

Endomag's are not compatible with all AR/AK 9mm bolts.

Really?????? Since when????

Mean Arms makes two versions of their Endomag. One version will work with any Glock and Colt style blow back bolt. The other version is designed to work with the CMMG Radial Delayed Blowback (RDB) system. The two styles of Endomag's are not interchangeable.

https://www.meanarms.com/products/detail/endomag-9mm

You have to use the drop down menu to choose which version you want.

 

[GNP]

Really?????? Since when????

Mean Arms makes two versions of their Endomag. One version will work with any Glock and Colt style blow back bolt. The other version is designed to work with the CMMG Radial Delayed Blowback (RDB) system. The two styles of Endomag's are not interchangeable.

https://www.meanarms.com/products/detail/endomag-9mm

You have to use the drop down menu to choose which version you want.

Did you watch the video above? Apparently it is possible to get a combination that the Endomag won't function with, he explicitly states that if a gunsmith can't get it to work they will refund the price.