HS receiver screw spacing is the same as a 700. Simply toss the HS bottom off a fhuqking cliff(because thy are fhuqking Dog Schit) and go AICS DBM,with a freshened inlet(no biggy). The chambering isn't cited,but I'd wager a .473" boltface and that would mean AICS binderless mags for me. Hint.
RHR has GB AICS M5 DBM on Sale currently and I have a pile of them. They are Skookum. May as well grab a few mags while you are there,as their pricing is superb and they ship fast. Hint.
Now as for hoping someone makes mags to cross to HS DBM,that SURE as fhuqk ain't happening. HS uses their proprietary Goat Fhuqk "design" and nobody is dumb enough to follow suit. Hint.............