Correct AW magazine for AT-X

Dvldog458 · Jan 27, 2024

I just purchased an AT-X in 308w last month and I'm looking for additional 10 round magazines.
I see MH and EO have two different versions of AW magazines.
Model # 6677 and 0726.
Which one is the correct magazine I should buy for the AT-X?
Thanks in advance.

AllenOne1 · Jan 27, 2024

6677 is an AI AX mag
0726 is an AI AT AW mag

Rio Precision Gunworks · Jan 27, 2024

You want to use AX mags in an AT-X. It can take advantage of the front lip.

Either will work though.

Dvldog458 · Jan 27, 2024

Thx guys!

RUN8 · Jan 28, 2024

Mile High has AT-X “Optimized” magazines in stock. Just ordered a spare for myself, and a few other items.

Accuracy International: AT-X Optimized Magazine (10 Round)

Accuracy Internationals Optimized AT-X Magazine with an improved feed ramp and follower.

www.milehighshooting.com

Dvldog458 · Jan 28, 2024

Optimized......interesting.
And it has a different model # 29896.
Does anyone know what the differences are?

Dvldog458 · Jan 28, 2024

Maybe it has to do with the followers.
I put the 2 AW mags I have for my atx next to each other and noticed the followers are different.
The mag on the left is the one that came with the rifle when I purchased it from EO.
The mag on the right was purchased by my local gun shop where I had the rifle shipped to.

RUN8 · Jan 28, 2024

Dvldog458 said:
Optimized......interesting.
And it has a different model # 29896.
Does anyone know what the differences are?

The Optimized magazine has the updated ramp style follower.

epaultmbt · Jan 28, 2024

Dvldog458 said:
Maybe it has to do with the followers.
I put the 2 AW mags I have for my atx next to each other and noticed the followers are different.
The mag on the left is the one that came with the rifle when I purchased it from EO.
The mag on the right was purchased by my local gun shop where I had the rifle shipped to.

How did you get those extensions on the AW/AX mags? How many rds do you get in them?

Dvldog458 · Jan 28, 2024

The original mag on the left I can get 15 rnds.
The new mag on the right I can get 16 rnds.
I dremeled the welds on the floor plates. Cut 1/8" from the bottom edge with a portion in tact that I bent to use for channel in the extension. I filed the edges and slid on. I'm sure there are other ways to do this. This worked for me.
No issues so far.

Here's a YouTube video I did with my teenage son operating the camera.
I apologize for the shaking cam. It's our first video.

lennyo3034 · Jan 28, 2024

FWIW my AX mags did not feed 6GT very well in AT-x. Nosedive issues into the mag. Tried a MDT 12rounder AICS mag and works perfect.

epaultmbt · Jan 29, 2024

Did you need to file down the AICS mags to run in your ATX? Every time I’ve tried the AICS feed lips put a lot of pressure on the bottom of my bolt.

Rodney65 · Mar 25, 2024

RUN8 said:
The Optimized magazine has the updated ramp style follower.

Is there any way to optimize 6677 magazines a person already has?

mobius38 · Mar 25, 2024

lennyo3034 said:
FWIW my AX mags did not feed 6GT very well in AT-x. Nosedive issues into the mag. Tried a MDT 12rounder AICS mag and works perfect.

@lennyo3034 can you confirm that its these mags that worked for you? https://mdttac.com/6br-mdt-metal-aics-magazine-12-rnd/

RUN8 · Mar 25, 2024

Rodney65 said:
Is there any way to optimize 6677 magazines a person already has?

I don’t know for sure but I think the follower is the only difference.

Dvldog458 · Mar 25, 2024

Is it possible to purchase only the follower and spring assembly to upgrade older mags?

RUN8 · Mar 25, 2024

Probably not at this time. I’ve only seen complete magazines for sale.

lennyo3034 · Mar 26, 2024

mobius38 said:
@lennyo3034 can you confirm that its these mags that worked for you? https://mdttac.com/6br-mdt-metal-aics-magazine-12-rnd/

No, I used the .308 size mags. Those worked for me (not the smoothest but they worked). I have not tried the 6BR mags.

@just browsing has tried them too.

just browsing · Mar 26, 2024

I’ve used MDT .308 and BR 12-round mags in my ATX with no issues. As Lenny said, not as smooth as the AX mags, but I didn’t have any issues with them either.

For GT I found that sliding the rounds slightly forward to the shoulder in AX mags worked best for me.

Rodney65 · Mar 26, 2024

just browsing said:
I’ve used MDT .308 and BR 12-round mags in my ATX with no issues. As Lenny said, not as smooth as the AX mags, but I didn’t have any issues with them either.

Wow. I feel stupider than I usually do for not trying that until just now. Seems to function fine and I have like six of them.

Thank you to Lenny and you for sharing that.

Rodney65 · Apr 5, 2024

RUN8 said:
I don’t know for sure but I think the follower is the only difference.

So I removed the follower spring from a 10 round AI AICS magazine by drilling out the rivets. Then I ground down the front of the top spring leaf about 3/8" until the holes lined up with an AX follower and riveted it on.

It isn't perfect and was a bit of a struggle to get back in the AX mag body but I have a lot more spring pressure now but still the original plastic follower.

BurtG · Apr 6, 2024

I put a AICS mag in and it jammed hard almost didn’t get it out

Rodney65 · Apr 7, 2024

BurtG said:
I put a AICS mag in and it jammed hard almost didn’t get it out

Only MDT brand ones work for me and some work better than others. You can feel the bolt rubbing on the feed lips or something with some.

427Cobra · Apr 7, 2024

Waldemar54 · Oct 2, 2024

Q. What is the AI's P/N for the new AT-XC optimized 10 rd mag with a new feed ramp and stronger spring?

BurtG · Oct 2, 2024

Waldemar54 said:
Q. What is the AI's P/N for the new AT-XC optimized 10 rd mag with a new feed ramp and stronger spring?

Different than the optimized mag ?

Accuracy International: AT-X Optimized Magazine (10 Round)

Accuracy Internationals Optimized AT-X Magazine with an improved feed ramp and follower.

www.milehighshooting.com

Roadrace33 · Jul 18, 2025

Reviving this thread, who has run a BR or dasher case in an ATX OR ATXC? I was going to get a prefit 6br barrel to use instead of the 6CM but I was curious how it would feed? I do not have a dasher or BR case handy to try-yet, or I’d try it myself.

Is the new “optimized” mag the solution?

A gray ops AW mag would work wouldn’t it?? I have a few of them on the way..

diggler1833 · Jul 18, 2025

Roadrace33 said:
Reviving this thread, who has run a BR or dasher case in an ATX OR ATXC? I was going to get a prefit 6br barrel to use instead of the 6CM but I was curious how it would feed? I do not have a dasher or BR case handy to try-yet, or I’d try it myself.

Is the new “optimized” mag the solution?

A gray ops AW mag would work wouldn’t it?? I have a few of them on the way..

The Gray Ops mag will definitely work much better than nothing, and probably just as well/if not better as an HRD kit.

I use one for the 6GT in my AT-X. So far, no issues.

Roadrace33 · Jul 18, 2025

diggler1833 said:
The Gray Ops mag will definitely work much better than nothing, and probably just as well/if not better as an HRD kit.

I use one for the 6GT in my AT-X. So far, no issues.

Right on. I’m gonna try it.

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