Ok I noticed this the other day, it isn't a universal sight tool as it requires special plates for each gun. But the plates are cheap compared to a full sight tool. But overall it seems really well designed.
Yes I know I can use a vice and a punch, but I like sight tools as I can take them to the range for granular adjustments there.
Two features I like, first new pistols are $18 for a plate, plus $75 if I ever need the 30 degree pusher (for Glocks and Hks). The other feature is the much deeper recoil spring cut, you can't fit long slide guns on most sight tools. On top of that since it is only a $18 plate MGW is making them for pistols where there isn't a match for a $100+ sight tool.
I have one on the way with M&P, M&P Shield, and FN plates. I hope it lives up to my expectations as I have my M&P and Sig sight tools for sale on another site to help buffer the cost.
And for Caleb since the top is removalable, and you can replace the pusher it is perfect you for. You shouldn't need to jig saw it apart.