Will these fit a regular GT arrow

Probably not,the heavy Hunter's nocks say for hunter shafts only.So I'm guessing if the nocks are different the inserts will different also,maybe I'm wrong

the Heavy Hunters have a 11/32" outside diameter, therefore the "lip" of the inserts is tapered from 11/32 at the shaft side to 5/16 at the point side. If you would want to use them in 5/16" shafts youd probably need to grind down that tapered lip.

P.S. Hope thats understandable.

Thanks guys