T/C peep on GPR

[Billhuntz]

I haven't taken any precise measurements but...If I hold my T/C Hawken next to my GPR the holes on the tang look like they are identically spaced. Does anyone know if I can use the T/C peep on both rifles without drilling??

I'm thinking about just buying one and worst case I'll just put it on the Hawken.

 

[CoyoteJoe]

Don't know for a fact about the T/C sight but Lyman lists the same sight as being useable on both rifles so I would guess the hole spacing is the same, maybe.