Other Chinese B3 part needed

If anyone has a bunch of parts for the chinese B3 airgun, I'm in need of just the threaded screw with the knurled head and the small circlip for the sight assembly for one of them. I have 3D printed the sight itself but can’t find the screw (or screw and circlip.) Long shot I know, but thought I might have a better chance starting a thread since it may be a while till I find one. Sorry for any additional posts on this you saw earlier. Trying to get this in shape for my son to shoot.

-greg
 
FYI, here's what I'm looking for exactly, the threaded small bolt with the knurled head on it, as well as the super small circlip that holds it on. Thanks everyone!

Screen Shot 2025-04-16 at 1.54.16 PM.png


Screen Shot 2025-04-16 at 1.54.30 PM.png


Screen Shot 2025-04-16 at 1.54.48 PM.png