So Ii ran my unmodified AX and AW mags a few weeks back and the AX with 6GT ammo would fail to feed rounds from the left side of the stack pretty regularly. I cycled 4 mags of each the AW never failed to feed. The AX did a couple of times each mag.
Today I ran a 80 round match with a 2 pieces of tape over the back of the AX mag lifting it up, AW unmodified. Both mags ran flawless at the match. I alternated mags each stage. My theory is the AW without the front lip allows the mag to be more horizontal and inline with the bolt and less likely to have the bolt run over the top. The AW still has play and i expect if a stage put pressure on the mag lifting the front similar failure would occur. Not a fan of duct tape on my gear would be interested in shimming the mag catch.
View attachment 7953749