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Magazine catch length after filing


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I'm soon going to be installing a bullet guide, and to be able to accept AK mags I see it's required to do a little filing on the mag catch.  Just for a reference I was wondering what the final length of your catch is until it would accept the AK mag?  I used a vernier caliper on an unmodified catch and it is dead-on 1.50 inches in length.

 

thanks!

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Mine mic's out to 1.455". Nice lock up with a cunt hairs play. 1.46" might have been a little nicer but I hate to split hairs. I have had absolutely zero feed issues from an assortment of non US magazines. 

 

Edit; Just for reference, the factory untouched latch on my SLR-107cr mic's out to 1.462"

Edited by Mullet Man
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When I was filing mine, I put the AK mag in and bottomed out the tab on the receiver. I then took a scratch awl and marked the face of the mag catch where the tab ended. After I removed the mag, I was able to see the line that I needed to file to in order to get clearance for my mags to latch into. It ended up being about 3/32" that I filed away.

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