You could try some loctite because maybe it's just unscrewing? Imo the problem is the tapered part of the shroud. It's plastic so the piston impact (aka reverse recoil) hammers that tapered piece and crushes it slightly so it's loose. All the previous models used an aluminum piece, but they cheaped out on the NP2 and we pay the price for it. It can be modded to take the load off that piece, which involves gluing or screwing the baffle to the shroud so the shroud tube is locked to the barrel and no longer crushing the tapered piece. You'd glue the part of the baffle where the threads are because the rest of the baffle has too much give. You can also try some other things to reduce the piston impact, like using heavier pellets and never seating the pellets any deeper than you would with your finger. Seating tools are a bad idea, anyone who says otherwise doesn't understand the way the gun works. Another option is modding the main seal, but too involved to get into here. A heavier scope helps a little too, it adds weight to dampen the reverse recoil. Cocking the gun also puts undue stress on it because the baffle flexes which means it tilts the taper a bit. Not much that combined with the pounding is obviously too much for it because these things break all the time. If you have a lathe you can make a taper out of alum. Unfortunately the alum tapers from the older guns don't fit because their shrouds had a smaller OD. I thought by now Crosman would've fixed this flaw, but it must be more profitable not to.