Need some Magazine Catch Notches cut

[ratski]

I have some old 40 round mags that I think were from the FMK machine gun out of Argentina.

I have six that are cut for the AR mag catch and three that are cut for the Uzi.

I'm looking to see if anyone knows anyone who can cut the 3 "Uzi" mags to add the AR cut and the 6 AR mags and add the Uzi cut.

Figure that way, I'll have 9 40 rounders that I can swap between the platforms.

Thanks in advance.

Dave