Sorry about that. This is my first time to take it down outside of the barrel/hopup unit and I'm not sure exactly what all the parts are and what they do, so a little bit of this goes over my head.
Sears- Not pressing up against the cylinder as far as I could tell, there isn't any wear.
Guide rings- intact however it seems to be a loose fit on the piston but on the cylinder cap it's fine.
Spring guide- seems fine and intact as far as I could tell. It's still on one piece.
The cylinder's parts, however, have sort of a chalky black grease on them. Does that need to come off? I feel like that's my problem. When I took it down it was on the lip of the second sear too. And because it's sort of chalky, toomanybbs' theory begins to make sense as well.
And thanks for helping me thus far, I really don't entirely know what I'm doing in there.