When I broke it down after 200 shots, I noticed a small groove in the latch rod, this was probably from all the rough burs of the trigger parts. When filing the trigger burs, the parts were so hardened, they damaged my files, whereas the latch rod de-burred very easily.  I thought once this is all smoothed out and lubed up, there should be no more problems, but unfortunately not.

At around 1100 shots, the sear failed to grab, so the rifle would no longer cock.

After it failed, I took the rifle apart and found a wide and rounded groove cut into the latch rod. I think if I hadn't smoothed the trigger burs out, it would have cut through even faster, the trigger burs from factory were like a serrated knife. The latch rod doesn't seem to be have hardened to the same extent the trigger parts were.

I think the overall design of the rifle including the trigger is fine for the price point, and it worked well after a tune up. I think the problems with it comes down to poor workmanship during construction. Which is a shame, my daughter had several hours of good fun plinking with it.

I know some will think this failure was due to something I did wrong, and that is always possible. But given the wear on the latch rod after the first 200 shots, I am reasonably certain it wasn't hardened as well as it should have been.

Crosman aren't selling parts online currently, even pyramid air said they couldn't get a new piston assembly. I have disposed of this rifle now and replaced it with a BSA V-Scout, which is Gamo delta, with a wooden stock and full metal barrel. My daughter likes the wooden stock better than the plastic ones.

My soft spot for Crosman has definitely gone