Anybody modified their ACIS 10 rd mags?

[Grog11]

Mine feed extremely hard out of the box (accurate mag). I have tried sanding them down inside the lips and also used the MPA tool to bend the lips out to the recommended width. Now, what I’m going to try next is to cut a coil off of the mag spring. Has anyone done that? Theoretically it will have less feeding power with a low number of rounds, but will that be a problem in the real work application? Thanks.

 

[KZP]

I polished the edge of feed lips on mine with 600 grit + oil, then finished it off with 4000 grit foam pad to mirror shine. Made a very noticeable difference.

What grits were you using?

 

[Grog11]

Good question, I’ll check when I get home. Pretty fine grit....... not ultra fine, though.

 

[KZP]

I just loaded 10 rounds and ejected them with my fingers. There almost no perceivable scoring line on the brass from the feed lips.

If yours is still scoring the brass, I would try some much finer grits in step to make it mirror smooth.

 

[KZP]

How far up then lips did you go?

Just the underside edge where the brass makes contact.

 

[smrkovsky]

I had the same issue with my accurate mag. After a little bending, sanding and cursing I got it to feed almost as smoothly as my AICS mags.

 

[KZP]

Search for Abralon sanding pads to get 4000 grit. I had some leftover from a furniture project.
Dremel is going to cut more than you need. 600 or 500 grit paper oiled is good enough. Don't want to do more than needed.

 

[KZP]

Oh okay, you could try a polishing compound if you have a small enough polish wheel to get a good angle on the underside.