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Strange malfunction w/ MKE AT94

1902 Views 7 Replies 5 Participants Last post by  Pentico'sClone
Hi all, first post here after a fair amount of lurking.

I took my MKE AT94P (Carbine-ized) to the range yesterday, and experienced a few malfunctions; a stovepipe and a few FTFs. When I got home, I cleared the gun and dry fired it a few times. The trigger felt weird, as though the hammer wasn't traveling the usual distance. When I field stripped the rifle, a live round fell onto the floor. This was quite disturbing to see after I'd dry fired in my home a few times.

It almost seems as though a round somehow got behind the bolt.

Has anyone ever seen a similar malfunction or have any idea how it might have happened?

I was using Remington UMC yellow box ammo, which was also causing malfunctions in an EAA Tanfoglio Witness that I'd brought along. Nosedive FTFs and stovepipes. I'm going to stick with Federal and Blazer for range ammo from now on, I think.

First mag was the included MKE mag, which ran fine, and the malfunctions occurred while using a Korean ATI mag.
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I bet the mag was your issue. Stick with the HK mags if possible.
I've had a brass case get stuck in between the top of the bolt head and the receiver. This has happened twice out of 600-700 rounds. Easily cleared by taking the back plate off and removing the carrier. Weapon was an AT-94k
I had this issue with my MKE 94 carbine.

When I got a FTF, I would raise the gun up at a 45 degree angle, then pull back on the cocking handle. (bad combat form) before tilting the gun over to expel the round out of the ejection port.

But instead of falling out, the loose round would roll back and fall into the trigger housing, just in front of the hammer.

My weapon would not even fire with the round stuck like this.

I doubt ammo or mags are an issue. Just how you clear the FTF.
I doubt ammo or mags are an issue. Just how you clear the FTF.
This strikes me as the most likely explanation. I still can blame the ammo or mags for the FTF that required the clear, which I evidently didn't handle properly. Can you describe the proper way to clear a malfunction on an HK pattern rifle or refer me to a good source for this info?

Now that I'm aware of the potential, I'm sure I can avoid it in the future. I've never had the gun FTF with Federal or even Wolf ammo with the MKE mag. Those Korean ATIs were just so cheap that I couldn't pass them up. Probably a good idea to get better ones, though. Are the MKE factory mags available aftermarket?
This strikes me as the most likely explanation. I still can blame the ammo or mags for the FTF that required the clear, which I evidently didn't handle properly. Can you describe the proper way to clear a malfunction on an HK pattern rifle or refer me to a good source for this info?

Now that I'm aware of the potential, I'm sure I can avoid it in the future. I've never had the gun FTF with Federal or even Wolf ammo with the MKE mag. Those Korean ATIs were just so cheap that I couldn't pass them up. Probably a good idea to get better ones, though. Are the MKE factory mags available aftermarket?

I have the one original MKE mag, and six of the cheaper Korean mags. All but one works fine.
One of the Korean mag will not feed.... period. It looks the same, feels the same, loads the same... but will not feed.
No doubt you cant go wrong with factory HK stuff.... but it does get pricey.

I had trouble with the first round of a full mag not feeding all the way into the chamber.
An upgrade to a stronger recoil spring seems to have taken care of this issue.
Later I began loading only 25rds per mag as an added precaution.

As for FTF problems. Not sure my way is "correct", and being a lefty has some unique skill challenges, but here is what I do:

I took a combat/SWAT tactical rifle class, and had more than one opportunity to clear a FTF.

The instructor told me to keep the weapon pointed towards the bad guy, rotate the weapon so that gravity would allow the round to fall out of the ejection port while pulling back on the cocking handle at least twice to cycle the gun. You might lose more than one good round, but the weapon should be up and running after a couple cycles.
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Well I got the opportunity to head to the range today and try out my reloaded ammo.

First... I must say that reloading your own ammo is not only easy, but made a world of difference in the repeatability of my groupings. WOW! Even the guy in the next lane was impressed... and I'm no marksman.

Anyhow... I happened to have a FTF issues, and encountered the issue of this original post.

Here are some photos of a round that did not feed properly, then rolled back and down into the trigger assembly while clearing.

This time, the round stuck between the hammer and the trigger housing, resulting in a total weapons failure.





Sorry for the poor quality..... camera phone. ;)
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