Mike I do not know whether the conversion kits are still available, but it was only last year,I think, that I got mine.

Swampman, I switched because I hate 3-position safeties. The original 3 position safeties worked just fine, but I found myself constantly flicking the switch back and forth because I could not tell whether I was all the way back or all the way forward, or in the middle. This of course would not apply to more intelligent shooters...Geo