I had one in a rifle many years ago. At the time, there weren’t many other options.
No idea who made it or the materials used.
Only issue that I recall is that the lighter hammer spring caused light primer strikes and made it unreliable with some surplus South African M193 that I was using at the time.
Trigger pull was just OK. About equivalent to something like a ALG ACT.
If you already have one, go ahead and run it. I wouldn’t buy one now, given the options available.