[L473ncy]

CO2 shouldn't be affected by cold. You can still play paintball with HPA and CO2 when it's cold can't you?

Anyways, it's not actually the ABS body that you should be worried about cracking it's the mechbox shell and internals that you should be worried about because of the "cold stress" being placed on the internals.

Also as an aside, V3 mechboxes should be slightly more cold tolerant (stress wise) than a V2 but it's still not ideal to be playing out in the cold.