I just bought this Aimtech scope mount for my bull barreled Mk 1 from Brownells. When it arrived it said "for Mk 1 and Mk 2 new style". It doesn't fit. The grip screw holes don't line up. What's a fellow to do? The ability to shoot with the scope and then remove the mount, replace the grip and shoot with the open sights was very appealing. Also, the extra magazine that I ordered has the button on the wrong side! Any suggestions?