I've been researching this carbine and haven't had much luck finding any reviews of it. Where can I find some detailed info on this gun? Who carries accessories for it?
Is there anything in particular you'd like to know?
www.hk-91.com also has some posts by owners (search the archives).
A local Fullerton, CA shop by the name of ARM-USA carries a fair amount of USC stuff (SL8-1 as well). They post on both HKPRO and HK-91.com's "for sale" boards.