CO2 Modifications

Thanks Paul for the input. I am wanting to do a regulator to plenum as CO2 is very sensitive to temperature and I was reading that a regulated plenum can help with shot consistency but I may have to regulate to 600psi in the plenum. The regulator for the plenum can help control power and I was going to try make an adjustable hammer spring and I like your idea of an adjustable transfer port.


I want to be able to turn down the power so I don't get pass through shots on birds while still being useful for rabbits during the day that's the main reason for it.

Edited by GOODold308 - 29 Aug 2024 at 2:15pm

Thanks I read your reply after probably doing it the long way. I haven't been on any forums in maybe 10 years so I'm a bit rust. I ended up doing upload then open image and copy url then you the [IMG]url[IMG] thing.

jwabfrog correct. What I was asking is there any fitting types I can't use like G1/2-14 or M18x1.5 as those are common fittings on pcp systems.

I went a picked up a cr600w today along with a 88g co2 cylinder and co2 to G1/2-14 (paintball) adapter and they guys at guncity were sweet as with it and we agreed it's fine as long it doesn't run hpa.

I'm not sure how to upload photos but once I figure it out I will post one but maybe in a different post.



Edited by GOODold308 - 29 Aug 2024 at 2:16pm

I was looking at a descusion from earlier on, and simple matter of co2 is it can't reach the pressures that a pcp needs to operate at dangerous fpe.(for people) I think this the whole reason it doesn't need a licence. So yeah you could convert your pcp. However your make and model of pcp would still come up as a licence needed as its not the way gun comes. Cops would take it off you and do thier who-ha, costing you time and money, possibly your fal till you got it sorted.
This speculation on my behalf only.

Thanks for the welcomes and information.

I have a lot of food for thought now.

I have only read these 2 posts about mods for the cr600.

http://www.kiwiairgunners.co.nz/forum_posts.asp?TID=607
https://www.nzhuntingandshooting.co.nz/f15/air-chief-22-cr600w-co2-77769/

I'm still very sceptical on what I can get way with as it seems like I could basically build a FX M3 but run it on C02 but if that was the case a person would be able to by a M3 and 88gram CO2 cylinder with adapter to G1/2-14 and then adapter G1/2-14 to M18x1.5

I was originally planning on making a drop block reg and plenum that and take the 88g cylinder I was also going to try make an adjustable hammer spring too but now I am re thinking my hole plan.

I am about to get off lunch so will add more this afternoon.

This is the thread, but it is for the 362 pumper, but certainly applies to the CO2.

G'day, welcome here.

How's it 308. Welcome aboard. I'm not qualified to answer your question, just welcoming you. 👍