12 gram CO2 Capsule P-Rail Holder

I'm Building a CO2 Powered Cross Bow so I needed a way to carry extra cartridges as I only get 3 High Power or 5 Medium Power shots per cartridge, I will publish the crossbow in a few months as I'm still tweaking it.

Items Required:
4 X M3 Countersunk Screws
Print Rails X 2

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