Pretty neat looking sight / mount.

As far as the Sims recoil pad, if you are like me, the standard stock is too short (or at least it was when I bought mine 4 years ago). Therefore, I got the slipover sims pad and it helps with the recoil and lengthens the stock. This lengthening may also help with getting low enough for the sight. The slipoever is also a lot cheaper. I believe it was the medium (size) one.