Depends on who made them.
Yes, the glock 23 and 32 and the 31 and 22 magazines are interchangeable.
Uzi magazines are available in capacities of 20, 32, and 40 rounds. 32 rounds is the common standard issue.
7/32
Grips, magazines, sights.
21/32
Old gun catalogs and magazines.
3/4 of 7/8 or 21/32
Old gun catalogs and magazines
There are 8 fluid ounces in a cup. There are 2 cups in a pint. There are 2 pints in a quart. There are 32 fluid ounces in quart. There are 32 fluid ounces in 2 pints. Of course this is American style measurements. Pub pints are different! Remember that fluid ounces and dry (weight) ounes are not interchangeable.
Mainly case length. These are not interchangeable. 32 auto goes into automatics and vice-versa. .32 auto shell has a bevel near the flange end so the ejector can grab it. Also the flange has a smaller diameter so that if you even try to put it in a revolver, it will either slide through the cylinder or get stuck.
E-bay them
DO NOT ATTEMPT THIS WITHOUT HAVING A GOOD GUNSMITH CHECK THE GUN AND AMMO!! DANGER, DANGER, DANGER, DANGER There is more than one type of 32 and 7.65 ammuntion and some of them ARE NOT INTERCHANGEABLE. DANGER, DANGER, DANGER, DANGER