Whilst wondering about my local RFD i came across two broken pistols in the bargain bucket,
A Crosman 1322 and 1377, both in need of new seals as there was just no buildup of pressure when pumped,
Easy fix! I thought, but when i got them home and opened them up, they needed new pistons, new seals, and valve work.
Thankfully I have a good workshop and proceeded to make the new pistons ( I had plenty of nylon bar lying around).
The valves just needed turning to remove the cone shape, then resealing, and a slight internal volumeisation.
Nitrile O-rings were the prefered type of piston seals.
I'm now happy to say these two Crosmans are possibly shooting better than they did from the factory.

The crazy thing is, they only cost me £10 each, and literally only cost me pennies and a bit of time to revamp,
so it looks like these two beauties will be staying in my collection for quite some time...

https://imgur.com/a/qltn7NM