Triumph Systems Brass Beam Features The Triumph Systems Brass Beam is inserted into a 9mm firearm in place of a standard round and when the firing pin strikes the back of the device it emits a red laser pulse rather than firing a projectile. This pulse is captured by the Brass App software giving shooters detailed feedback on trigger control sight alignment and follow-through without the expense or logistics of live ammunition. Because the device replicates the feel of a round being chambered and struck dry fire practice with the Brass Beam closely mirrors the experience of live shooting. This makes it a valuable tool for building consistent fundamentals at home. Powered by a 1.5 volt button cell battery with an average life of one to five months the Brass Beam is built for extended use across many practice sessions before a battery change is needed. Its compact size allows it to be carried easily and swapped between firearms chambered in 9mm. As a Class 3R laser compliant with IEC 60825-1:2014 and rated at 2.6mW maximum output the device is designed with safety in mind for home and range use. The Triumph Systems Brass Beam gives novice and experienced shooters alike an affordable way to hone accuracy and technique. Triumph Systems Brass Beam Specifications Manufacturer: Triumph Systems Model: Brass Beam Caliber: 9mm Laser Color: Red Battery Size: 1.5V Battery Life: 1 to 5 Months Average Includes: 1.5v Button Cell Batteries Available At: GrabAGun