I'm still waiting to find the Mod 125 Sniper in .22. Preferably the black stock but I'm willing to slide on that. I know this is the gun I want. I just know it. Like you, I plan on upgrading to a nitrogen piston at some point.This is my game plan. Break the rifle in and season the barrel over a few months. Send it out for a tune. Shoot with it some more. From there I will decide what I want to do in regards to a nitro piston. Maybe I'll go with a nitrogen piston that is comparable to the spring like the ones in the falcon hunter/talon mag. Maybe I'll go with something more powerful like the 180bar. Perhaps I can find something in between the two. Who knows.The issue I have with this thread is there are a lot of expert opinions and a lot of them all say different things.