One piece base/rail for BSA Monarch action

Gday team, i have just picked up a new rifle built on a BSA Monarch action. Is anyone able to confirm for me that Rem700 bases/rails also fit these actions? Im having trouble finding a 20moa rail specifically for a Monarch action but I see on Brownells etc there are numerous rails listed for Rem700 LA and it says will also fit BSA Monarch.

Hi, the contour of the action would be the same as well as the front and the rear hole spacing, which mean a two piece base will fit. But the spacing between front and rear bridge might be different ant not fit a single piece base.