Crosman Piston Seal, Fits NPSS, New NPS & Older Vantage Air Rifles

The seals are basically all damaged at the factory during install so I'm guessing that's what you saw? I have some pix of horrible ones! Not sure if the NP2 piston is installed in China or the US, but they don't care it gets damaged. People need to smooth all the sharp edges in the main tube where the holes and slots were stamp cut, then install a new seal or the same will happen. I usually do this before I fire a single shot. The NP2 with the oem spring should be able to get the std Crosman pellet up to 850 if you fix some misc flaws, maybe 870 if you're lucky. If you want more on up to 940 you have to get the Trail XL. My XL shoots 940 but that's about the limit, maybe 950 if I were at sea level. Out of the box less 900 b/c again you have to fix flaws first. I would've assumed the oem spring, which is ~$8, is at or above 170atm but just a guess. If you try the 170 unit let us know how it compares....