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Old 01-31-2013, 03:03 AM   #1
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Default Question on AR steel mag

I bought some 30 rd steel mags from Mako last month and they recently arrived. They look great but I have an issue. It can be easily plugged in and holds firmly, however if I load some cartridges in say 20 rounds, it becomes difficult to get plugged in firmly unless I slam it in really hard. Why and how to fix it?



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Old 01-31-2013, 03:36 AM   #2
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Originally Posted by emulux View Post
I bought some 30 rd steel mags from Mako last month and they recently arrived. They look great but I have an issue. It can be easily plugged in and holds firmly, however if I load some cartridges in say 20 rounds, it becomes difficult to get plugged in firmly unless I slam it in really hard. Why and how to fix it?
Not sure what your exact issue is...are you saying the mag doesn't engage the latch properly and drops out or that the mag is difficult to manage due to the weight?


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Old 01-31-2013, 03:53 AM   #3
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Are you inserting the mag with the bolt carrier group locked into the barrel extension? If so, just lock the bolt carrier open and try it. It should work fine. The steel mags are generally HK made or British SA-80 mags. They should be fine.

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Old 01-31-2013, 03:56 AM   #4
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Originally Posted by Jpyle

Not sure what your exact issue is...are you saying the mag doesn't engage the latch properly and drops out or that the mag is difficult to manage due to the weight?
It engages the latch properly when it is empty or lightly loaded. However if the mag is loaded heavily say 20 or more rounds it becomes very difficult to engage the latch....

Any insights are appreciated.
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Old 01-31-2013, 04:08 AM   #5
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Welcome to the forum!

Reread post 3

The new mags, are not sloppy yet. They will loosen up a bit over time.

Putting a full mag in the rifle, when the bolt is closed, pushes down on the ammo. As the mag is full, this places a bind on things. If you have the bolt in the open position, then the ammo goes up into the rifle without pressing on the bolt.

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Old 01-31-2013, 07:03 AM   #6
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Some cheap magazines swell when fully loaded and stick in the magwell. I wouldn't expect that of a good steel mag though. Or any good mag period.

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Old 01-31-2013, 10:14 AM   #7
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Sounds to me like the springs are just new. Insertiong a loaded mag with the bolt closed the top round bounces off the bolt. So you have to insert it harder. Or keep the bolt open while loading the new loaded mag.

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Old 02-01-2013, 04:27 AM   #8
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Thanks to all for your advice. AR10 and robocop are right that when the bolt is closed it puts a bind on the mag, therefore making the mag inverting more difficult. Next time when I first insert the mag I will just lock the bolt open and that will work.

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Old 02-02-2013, 12:08 AM   #9
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There are some similar threads on other Forums. Loading the mag to full capacity and letting it sit for a week or two should make the spring relax a little bit.

If necessary, you can very lightly and carefully file on the mag catch portion of the mag to make it easier to lock in.



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