I have a rebuilt 43 IBM. I keep it in the safe with a loaded mag in the well and 2 on the buttstock. They are loaded with Winchester HP ammo. That is my wife's go to self defense rifle. If 45 rounds doesn't cure what ails you, you bit off too much or are already dead!

I bought a case with 100 used GI 15 round mags in the 90's for $100, and sold about 80 of the for $6 each, and the WWII vets said I was ripping them off, but they bought them anyway! I have a few 30 rounder GI's.

Once I built a toy Sterling submachinegun for my 4 year old (now 41) and used a M-1 30 round mag. I drilled holes in muffler pipe, put a sheet metal mag well on the side, and a counter bored 5/8x 8" bolt was the barrel. A very ****** spray paint job looked like a Sterling from across the room. The banana mag was a hit with the gunstore folk.

Ivan