The 850 can be made dual fuel as well.

Posted by - rbva Dec/22/2009 at 10:59AM

The 850 can be turned into a Dual fuel gun also and run on either
air or Co2 for around $540 you can one modified to run on both
from www.the850store.com or I can help you convert your own.
The 850 is a really good platform and highly upgradable.
Roald.

---