Need help with discontinued hardballer sight

[The Ten-Ring Kid]

Hey guys, I just picked up an AMT hardballer, and before you all tell me what a piece of crap it is, I like it and it shoots well for me. The problem I'm having is the Millett rear sight on it won't hold the windage adjustment. I took it apart and the detent holding the screw in just seems like it slips out. If i can fix it, great. If not, seeing how the rear sight is discontinued everywhere I try to look for it, does anyone know where I can find one or what a suitable replacement might be? It looks like a gold cup style, so will one of those work? Any help is appreciated! I love shooting it, but a broken rear sight makes it a little hard! Thanks.

 

[HisSoldier]

Try asking in one of the 1911 forums, there are two that spring to mind, http://forums.1911forum.com/ and http://www.m1911.org/