CP33 Magazine Extension

Does this use the standard spring?

Printed in Priline Carbon Fiber Polycarbonate. Functions fine with a little sandling/polishing to reduce sticking.

Pictured next to the official extension, which is also 3d printed, surprisingly.

Hey, printed and installed with a homemade guide rod. The problem most people will run into is that you'll only be able to load 38 or 39 rounds and they won't feed right. You'll need to sand the inside of the extension carefully till the follower can move through it freely.

You can sand and put it back together and test it by getting a rod and pushing down on the follower. If it get to the extension part and doesn't move freely look closely and see where it is catching and sand again. Do this and you'll eventually get a working mag.

It fit the magazine fine as printed. I have not installed it and an extended guide rod on a magazine yet to see if it functions correctly.

Parts printed out well in Polymaker polylite PETG. Have not installed it onto a factory magazine yet to see how it functions. Just picked up the CP 33 and have not been out with it yet to check how it runs before trying any mods.