This thing is awesome. It is the smallest and most lightweight rail mount laser available which is great because that takes up less realestate on your rail. It will fit on virtually any firearm (rifle or pistol) with an accessory rail system. Another cool thing is that this is a Laser system that you could switch back and forth between your AR-15 and your carry pistol so you are getting a 2 for 1. Here is some info from their site:
The Micro is a perfect match for compact and sub-compact pistols with an accessory rail used for CCW. The ambidextrous tap on/off activation will not hang up or snag when holstered or carried in bag, pocket, or belt. Plus, there is a 10 minute timeout feature put in place to preserve the life of the battery which has been clocked at over 5 hours runtime.
With its miniaturized design, the Micro delivers the strength and durability needed to withstand the shock of recoil while possessing a sleek contoured look.
The Micro combines LaserMax ingenuity and current laser technology to create a versatile
low-cost, fully adjustable laser solution for various types of firearms.
You can check it out and purchase it from their website by clicking HERE.
I would definitely recommend checking out the rest of their website as well at www.LaserMax.com . They have a lot of great products available.