Ruger 10/22 ... COČ cartridge stuck

[happymecanic]

... if you have questions ask away, I'll do my best to help.

How does the COČ pressure vessel (tube) disconnect from the upper casting? Does it unscrew?

Nothing to unscrew once all the trigger parts are removed, you just lift the pressure tube/brass tube/valve assembly off the casting as a unit and separate them by pulling them apart. Pic 31 shows the parts in place, pic 35 shows them out. There's an Oring backed by a washer on each end of the brass tube, held in place by two prongs built into the casting. Not a sealing method to use with HPA, but seems efficient for that application.

And you're welcome Mark, very glad if that's of some help to you .