I bought these 2 10 round MKA mags at the same time a few years back.
Notice how different they are. I mean a lot different.
Mag B runs like a champ, never a problem.
Mag A is very problematic, sometimes it will load ok but when the hammer hits the pin I get nothing.
You can see that the distance between the top of the bolt hold open and the top of the lips varies quite a bit.
This in turn presents the follower higher in MAG B.
Also when thee follower is pushed down on MAG B it flows smooth and free. When the follower is pushed down
on MAG A it seems to bind and not flow as smooth. I'm going to file down the lips on MAG A to the dimensions of
MAG B and do some fileing on the inside as well to see if I can get the follower to flow more freely.
I don't know if this will help any or not but it is worth a try.
Like I said MAG B runs great, MAG A not so much.
it is just wild how far off these 2 mags are from one another when produced at the same place.
I am going to purchase me some of the new Gen 2 mags and see how well they compare to these older ones.
Edited by SHOTGUN MESSIAH, 17 February 2016 - 03:02 PM.