Magazine makers' initials

[painter777]

Patrick,
I managed to find a homemade aluminum plug someone had made. I found in a mag from a box of mags I bought years ago. I pulled the bottom plate off, removed it and stuck it in a parts tray. The mag and spring were still intact. This could easily be copied by using wood.
Pull the bottom from a mag and make a wood block that will fit inside (measurements below). You won't have to trim the spring as the plug will make the spring think there are already 5rds in. Slide the mag floor back in place. Double check it, so it does take up the space for 5 rds (Been a long time since I pulled this apart). You'll still have a traditional look of a 15 rd magazine.

Measurements:
Needs to stand 1-7/8" tall
Wide: 1-11/16"......... Equal to the ID of your mags.
Depth: 5/8" ........... Equal to the ID of your mags.

Your Floor plate will make a good traceable template on the wood, but you'll still have to detail sand to fit inside. There will be a front side and backside to the plug.
Sand the outer corners of the wood plug to mimic the inside profile of the mag. It will be... Very similar to the shape of the floor plate, but have a smaller footprint. Should be just enough to fit securely inside the mag.

Cheers,
Charlie-Painter777