TRUGLO really got this one right!
The Micro-Tac is small, light and from what I've seen so far, practically indestructible. I have mounted it as designed, on the underside of the receiver of a pistol and also upside down on the topside of the receiver of a shotgun. In both cases it worked perfectly and was easy to use. I have not taken any special care of it in either case and it has held its zero perfectly. It's tough.
Truglo is known for its fiber optic products and more recently for its Tritium sights for pistols. Those Tritium sights have become the favorite of law enforcement officers all over the US.
Truglo has always been an innovator, from the first fiber optic that literally changed the way sights worked to Tritium sights to aid our law enforcement officers and home defenders to this new Micro-Tac laser sight. Those folks in Richardson, Texas know what they're doing and what we need.
This is one that you should definitely take a look at see just how it can work for you.