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Old 05-21-2018, 05:25 PM   #1
Razvedka
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Default RS AK-301M + AKMT MRO wobble

Hey guys, hoping to get some friendly advice from the forum on this optic mount set up.

I purchased this combo awhile back and finally got around to shooting it on my DAKM two weeks ago. While I was running and gunning I noticed some give where, I presume, the AKMT mates with the AK-301M. I did some googling + looked on the forums, but the only advice I (reliably) found was to use blue loctite.

Well, I've done that and have hand adjusted all the screws. There's still that tiny bit of wobble back and forth by the MRO. I double checked the AK301M tightness on the side plate and can confirm that's solid and G2G.

Is some amount of give 'normal' for RS mounts? Is staking the only way to fix this?

Thanks in advance!
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Old 05-21-2018, 07:21 PM   #2
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Not sure about any wobble in the RS mount but the mount is stout enough to flex a stamped receiver.
I've seen this on a friend's rifle and at first we thought it was the mount.
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Old 05-21-2018, 07:38 PM   #3
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Might want to PM Horse and let him know what is going on. He might be able to help ya.


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Last edited by bigrog210; 05-21-2018 at 11:11 PM.
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Old 05-21-2018, 10:49 PM   #4
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*Ping*

OP - is the MRO moving on the upper?
Is the upper moving relative to the lower?
Is the entire thing moving relative to the rifle?
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Old 05-21-2018, 11:10 PM   #5
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*Ping*

OP - is the MRO moving on the upper?
Is the upper moving relative to the lower?
Is the entire thing moving relative to the rifle?
Appreciate the timely responses guys!

It's subtle, but there is give. The give is most noticeable if I grab the MRO and push/pull it across the receiver midline.

The MRO itself is not moving. The four screws secure it just fine to the AKMT.

So either the AKMT is moving on the AK-301M (which I am now skeptical of) or the AK-301M is actually wobbling. I've adjusted it to be as tight as it can be while still sliding onto the rifle, so I dunno what else to do with it. Very odd.
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Old 05-21-2018, 11:20 PM   #6
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If you can , get another set of eyes to look at it or maybe take some video.
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Old 05-22-2018, 07:21 AM   #7
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Take the mount off the rifle and lay it on the lowers “face” so that the optic is pointing up in the air.

See if you can clamp it with a spring clamp or just push down really hard. Then push the optic side to side and see if the upper/lower combo moves.


If not - the movement is rifle to mount.
If you have tightened the mount per the instructions so that it cannot slide on when you tighten one more flat, then the fit should be GTG.

What most people don’t realize is that you have a 3-4” moment arm and that the receiver side wall flexing minute amounts manifests itself as the optic moving slightly side to side. This elastic deformation is normal and in fact desirable. I don’t want to take down a rifle be binding up the receiver. If the optic mount fails, the rifle should continue to work properly. That way it stays in the fight even if the mount fails. If you were to cement the mount to the rifle it could taco or tear apart the receiver if it were to fail - something we very much do not want to happen.
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Old 05-22-2018, 01:26 PM   #8
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Well I feel like a stupid jackass. Tried what you suggested, and I think it's definitely just the receiver wall flexing then..

Thanks Horse. Wasn't trying to slander your good name or anything.
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Old 05-22-2018, 02:14 PM   #9
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No problems man - it’s your hard earned money that purchased the mount, it’s my opinion that it should be worth it. If it was the mount I would have worked to fix it ASAP!
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Old 05-22-2018, 02:56 PM   #10
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No problems man - itís your hard earned money that purchased the mount, itís my opinion that it should be worth it. If it was the mount I would have worked to fix it ASAP!
You're the best.
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Old 05-22-2018, 09:20 PM   #11
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Awesome.
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Old 05-23-2018, 11:23 AM   #12
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Awesome.
Yep, feel very comfortable saying rs is great as is horse.
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Old 05-23-2018, 11:27 AM   #13
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Glad to see threads like this. This is why Horse continues to gets my business, great CS!
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