zx7 magazine question

[Grease Gunner]

Hello all

Have a very early Paws zx7 45 acp sub gun

it uses modified m3 mags which i have none thats modified

m3 unmodified grease gun mags are tight and stay in and work flawlessly.

but i would like to have some that lock in.

But they dont lock in

any ideas anyone?

Thanks

Edited March 9, 2021 by Grease Gunner