Not sure if they are compatable but I did not have good luck with the mountain tactical rails. I would not do it again, they are expensive and the first one I received came in with a bow in it and the the recoil tab did not allow the screw holes to align, the second one they sent me had a slight bow in it (I’m running a Spuhr ISMS and not worried about the slight bow) and I had to file down the recoil tab to get the screws to align. I put them on a CTR.