Looks like a Benchmark groovy frame to me.
Remember the name I looked for and it was Kapp groovy. Then the question is it a Kapp or a Benchmark? I think it's a Kapp ... or ??
Both made them. Maybe Benchmark made them for KAPP? I have one here and it takes a Benchmark safety. Just bought perhaps one of the last ones from PTP last week.
Benchmark safety and you can swap the trigger out to one of the newer better ones also.
they're pretty comfy frames with those hogue grip panels.