Save your money. This thing is VERY flimsy.
I mounted it, and it looked like a very good fit in the dovetail. Then I tigtened the screw and it nearly pushed the mount straight up right out of the dovetail. I applied a bit, and I mean a very small bit, of pressure to the rail with my thumb, and it bent quite easily.
I would NEVER trust this rail to hold a sight on a rifle I expect to trust my life to. No way.
I took some measurements with my admittedly old vernier caliper. Pay attention to the 1mm measurement. It's just not enough material for an aluminum rail. I'm not even sure it would be sturdy enough if it was made out of steel.
Let's see if I know how to post a pic here.