Happy New Year everyone, my friend just inherited a .22 cal air pistol. He is looking for some information about it. It apparently has no marlings as to manufacturer, model or serial #. It looks like a Ruger Mark II auto pistol. It has the safety behind the trigger, the CO2 goes into the grip. It has a cocking bar under the barrel, over the trigger and has what appears to be a power regulator valve at the front of the frame. The finish is peeling off, and it doesn't look like it has been fired in a long time. He would like ANY information about it including (dis-)assembly instructions and maybe a source of parts if necessary.
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