Four models of Firestars actually. Don't forget the M243, double-stack Firestar Plus. Aluminum also. I carried the one at the top of this page forever.
http://star-firearms.com/firearms/guns/firestar/index.shtml
Star went out of business in the 90s. Story:
http://star-firearms.com/star/index.shtml
Parts are GONE. US dealers bought crates of parts when they closed. More than apparently existed in the rest of the world. But it's been decades. Fun to have for shooting, etc. especially if cheap enough. But less so for a serious gun. If something breaks, that may be it anymore.
Magazines and so on are pretty easy to find though, and a few make holsters so they work.
Info on mag safeties:
http://star-firearms.com/info/mags.shtml