I recently bought a McMillan hunter stock for a centerfeed long action. As it was shipping, I ordered the blind mag box and follower for a 7 Rem Mag. The trigger guard savage sent me doesn’t fit the inlet of the stock. The stock seems to be cut for a flat trigger guard, whereas the one savage sent me is, well, not flat. Can anyone assist me? Is there an “older style” I’m unaware of?

PS: I bought the stock second-hand, but was told it would match my action by the seller.