Purchased this for my suppressed MPX.
It can be in a nice protective box with tools and accessories.
Popped onto and bolted to my rail with little to no trouble.
The window is comicly large but makes it almost a cheat at how fast you can aquire your sight on target. The protective covers do not interfere with targeting your sight so you can leave them up of flip them down or remove them altogether (it's user preference).
Large buttons makes adjusting brightness and dot reticle from dot, ring, dot ring fairly easy.
Very happy with my purchase.