Thread: Ring and base identification

99% sure those Conetrol bases are for a BSA Hunter/Regent action.The split base with cap screw clamping provides anti recoil friction required due to the fact that the (early)Hunter action parallel rear receiver bridge didn't have a milled detent to accept a base spigot.BSA latter on did mill an anti recoil detent hence the latter default Parker Hale bases do have a locking spigot.How do I know all this? Just brought one with those very same Conetrols.