.22 Crosman P1377 Variable pump pistol

[harvey_s]

Not really, there is no reservoir for the air - on these guns the valve body is the reservoir and holds enough for a single shot.
It would quicker and easier to pump it up rather than connect it up each time.
You'd be better off selling it and putting the money toward something else...

[beagle2]

If you want a PCP pistol you shoud get something like a Brocock Atomic or something like that but they are not cheap to buy though most of them are very well made unlike the crosman most of which are cheap and cheerful that is not to say that they do not work well as they do what it says on the box with no frills.

[Aimstraight]

The 1377 is in .177 calibre, the 1322 is in .22 calibre. As said, not really suitable for converting to other power sources.