I will also ad that the grinder sights do not have 2nd and 3rd axis leveling. But Spot Hogg does take the time from the factory to square the level in the housing in the 2nd and 3rd axis to the mounting surface and the wire. This is something, that to my knowledge, not a single other company in the industry does. So even with a sight like the Grinder, the level will be extremely close, and at the very least, be square to the wire and therefor square to the pins to ensure that you will not have any left/right POI changes as you go out to distance due to the level not being square to the plane that the pins are in. The left/right micro adjust on each individual pin is also nice as many people will see the different colors slightly different. So even if you see the pins differently causing you to miss slightly left or right at one distance, you can adjust for that. Most other sights on the market do not have that ability to micro adjust each pin separately for windage like that and having the wire there, you can easily set the pins to be in a perfectly straight line as well. So overall an excellent sight that doesn't have all the extra axis adjustments, but will still ensure you have the precision and accuracy or many other sights that do have those features.