I just got this well-used Springfield(actually, I just got it back). The guy I originally got it from didn't remember who did the work, but it was done in the Anchorage, AK area about 15 years ago while he was living there. It feels great in the hand and shoots nice, small groups. He said the wide-spaced, front grasping grooves are better for cold hands or gloves. I've checked before, but thought I'd try again in an Alaska forum to see if maybe someone recognized the work. Thanks, either way.