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CO2 to HPA for Umarex Legends

Has anyone had success using a CO2 conversion kit on any of the full-auto 4.5mm Umarex Legends guns?

The issue I am thinking is that the magazines require you to oppose two 12g cartridges opposite from one another, so I don’t think the conversion would interface correctly as they require access to the bottom of at least one if the cartridges.

The gun; https://www.umarexusa.com/legends-mp-177-black

The conversion kit; https://www.amazon.com/VaVoger-Pneu...17&sprefix=co2+conversion+kit+,aps,186&sr=8-9
 
You can use that adapter for the Berretta version, a fair bit of warning is the HPA on BB guns regulated to 800psi is rough on them. On full auto, the Berretta side lever broke on mine and the safety switch flung off. I was able to fix it all, but I will have to see how to mod the regulator shims on the bottle to get it down probably to near 700psi if possible. The Crossman mod HPA from Alliance Hobby may work for it, but I don't know since I don't own both of these.


 
on the bottle to get it down probably to near 700psi if possible. The Crossman mod HPA from Alliance Hobby may work for it, but I don't know since I don't own both of these.

Thanks for that tip! I see they have adapters for the Diana Chaser too. Great website too, love their attitude!