I've seen 2 models, the XTR & a police model.
Same stock on both, different colored H-S Prec. that looks like the PSS model with the flat nose forearm.
The XTR was a cataloged item, it had a threaded muzzle with a screw on brake, the Police with a ported barrel. Made up to or nearly to the bankruptcy.
700 long action from all indications, maybe altered bolt stop or opened ejection port like the Ultra mag versions. Custom, or a non 700 extractor.
A chance some may have had 40x triggers, otherwise the ugh trigger.
Go to Gun Broker advanced search & look at completed auctions to see hat they've been bringing lately.