Heavy, solid feel - Leupold Mark 4 IMS 30mm Mount

Got this on the recommendation from OpticsPlanet. It's a snug fit on my AR-10 but I was able to just get it on. Even with just the thumb screws it tightened down nicely and with a little help from a screwdriver I don't think it will come loose. I didn't need the cantilever given the size of an AR-10 upper, but it doesn't hurt anything. The scope rings tightened down easily with no wiggle or slop. It is a heavy mount but I made it as a bench/bi-pod gun so the weight isn't an issue for me.