The Challenger Arms Corporation Plainsman (pneumatic) air pistol...

[DT Fletcher]

I think you'll find that all of the American CO2 end seals are the same. The Crosman part number is 150-054 and is easily found under that number on the bay etc. I stocked up on the opaque white ones that are a harder compound which resists any CO2 and holds up to the abrasion from use.

[JimmieDee]

Thanks DT. Although a search of that number only gives this....

http://www./itm/Male-Power-Wings-pou...dB1_BHO7aaNckA

[DT Fletcher]

Thanks DT. Although a search of that number only gives this....

http://www./itm/Male-Power-Wings-pou...dB1_BHO7aaNckA

Apparently what I saw were a bunch of US listings. In any case, the best way to source common parts like this is to go through one of the major shops in the US like MAC-1, Precision Pellet, etc. They've already gone to the effort of finding the right parts that really work.