Since its a 700 trigger pack....I'm sure its not an issue to get installed. Taking a file or a dremel to minor clearance a stock isn't hard or deal breaker in a community that is willing to pay $300 for a trigger.
I wasn't about to ask the bergara rep for a set of tools so I could take his display rifle apart next to a corn field.
I dont recall their being a rail on the display guns. I will look at google images of the BMR and see if their are inages of it with and without a rail. Should be easy enough.