Ultra Compact and User Friendly are what make this Red Laser one of the best on the market. This Laser is constructed of the most durable plastics available making it not only rock solid, but extremely light weight. The Laser is fully adjustable and will mount to most Weaver Style/Picatinny Accessory Rails. The laser also has a Weaver Mount allowing other accessories to be mounted to the laser. You can add a laser without losing a mounting point.