Only other option I know of is to rebarrel and maybe a gs can open out the bolt face to fit the grrr case. There’s a couple vendors doing a Howa “howage” style rebarrel so you could diy. Preferred barrels even includes a semi-go gauge (2 mil under saami or something so you fit right up to it...).
Uintah has a 6arc upper - pure bolt action fits on AR lower, for 1.1k. By the time you do the rebarrel you’re into it about that much as well.........
Might also need to open out the extractor groove a bit for the grrr base being thicker than 223, on that Howa bolt tweaking... dep on which caliber bolt you start with.
Uintah has a 6arc upper - pure bolt action fits on AR lower, for 1.1k. By the time you do the rebarrel you’re into it about that much as well.........
Might also need to open out the extractor groove a bit for the grrr base being thicker than 223, on that Howa bolt tweaking... dep on which caliber bolt you start with.