I have a ratty and so does my son. The great thing about these little beauties is the fact that you can totally customise them. You can purchase all these custom parts from GMAC or SD CUSTOM parts.
I have a power spring in my one as well as an extended probe. There's a noticeable increase in power for sure. They are also very light to carry and has the power to take out small vermin. They average about 9ft lbs. Apparently, Crosman are no longer making these guns. So I would snap one up now. Get one matey. You will not be disappointed.
Vintage