Great choice
This is being used on a S&W 625JM for competitive shooting. Searching the web, some people complained that the new blade had "play" and would wiggle around. Not the case for me, it's in there rock solid. In full disclosure I had a revolver gunsmith install it for minimal cost, so I can't say how difficult it was to put on. It's worth it though, the sight picture is incredible for a fraction of the cost compared to other options. The notch is a perfect .125" and appears to be slightly deeper, which is good. It also comes with the replacement parts for installation which is something other brands don't do, about a $10-15 value. It's a very functional piece that I expect will help my scores, especially on the long shots. It really should come with this from the factory. If used on a self-defense revolver there is a chance it could snag on clothing, as the edges are sharp, but for a competition gun that's a good thing.
