Giá đỡ băng đạn 12 gram chịu lực cao

A heavy duty version of these…

https://www.printables.com/model/546180-8-and-12-gram-co2-cartridge-clips

It is tight enough that you need (I need) to put a thumb on one side, pointer finger on the lift tab, and two or three fingers on the other side to snap the cart out.  Hence, only a single holder right now.  There is a clip on version also.  Different clip opportunities to come.

PETG seems pretty good for these.

I'll roll around on the ground with these and make an 8 gram version soon.