Just ordered this piece on gun broker and I'm not sure if the grips that come with it are anything special or just pretty/dime a dozen. The defining characteristic is that they are barely chopped for the larger ambi safety. Most grips have an extreme angle for them.
the closest, if not exact match I've found were in this thread:
That guy's are craig spegels that were a part of a custom novak job! Could make sense because the one I just bought also has at the very least, novak sights. No clue about the internals until it arrives. Either way, it might appear that elusive Craig Spegels came with my hi power!