What happened to RC Machine?

Old thread but great products. I wish I had purchased more!! The RC mags are incredible compared to OEM. I have 2 of them in .22 that use in my 30th anniversary AA S510 instead of the plastic or "special" all metal ones that came with the 30th. RC mags so smooth in operation that you can easily tell when the mag is empty without guessing, counting, or getting a dry fire. The OEM mags feel home made, crude and cobbled together by comparison. I really would like more.

Has anyone found another comparable mag?

I found a link and image of a "hi-tec products" mag but they also seem no longer available.