other products by Crosman
Things I liked: Much improved accuracy, by taking away the recoil characteristics of a metal spring. Able to keep NP powered rifle cocked for extended period of time without possible damage or fatigue of piston. Good power, although possible loss of fps with conversion, but very little at that.
Things I would have changed: The Nitro Piston is not a bad piece of kit. I would like to see if Pyramydair will offer the Hatsan Vortex in the near future. There is really nothing I can think of at the top of my head on what needs changing.
What others should know: I had this installed in my Hatsan 125Th, in .177, and it is like shooting an entirely new beast. The shooting of my rifle took much practice and a consistent hold when the metal spring was installed, but with the NP hold placement is much less sensitive. Accuracy is very much improved.
Things I liked: I replaced the springer in my Walther Falcon Hunter and what a difference it makes. Easer to shoot and more accurate even with open sites. Pyramyd Air made it very easy to get it installed and returned to me. Thank you Pyramyd Air for your great service and technicians.
Things I would have changed: Make them for more air guns.
Things I liked: Nothing! I bought a WFH 22 cal that had this upgrade done to it by PA. These guns are supposed to shoot in the 900 fps range with 14.3 pellets. Mine shoots 750 fps way too slow. This is what my Trail NP shoots and it probably had the same piston installed intop the WFH. Not what it should be. Don't do it.
What others should know: Find some of the new NPistons... by Moller and N Forcer have one of those put in.
Will this fit the Webley Patriot (Turkish)?
Will this fit a hatsan striker in .25 cal?
No, the Striker is a smaller gun so it needs a shorter nitro. I don't know anyone who has a Striker but I'm sure it can be converted since Crosman sells several sizes of nitro's. My guess is it has a stroke of ~100mm, so I'd look at the common spring use on guns like the Titan, Venom etc. That spring is ~260mm oal with ~111mm of that being shaft. So you can measure your guns internals to see if that will work, and my guess is yes. Then you have to figure out how to make it stay centered inside, at both ends. Or you can just tune yours with the coil spring which if done properly will be just as good (matter of opinion).
Will this work for my Gamo Varmint Hunter HP .177?