Recommended? - Yes Company Website - http://www.surefire.com Manufacturer - Surefire The SureFire 621FGA replaces the original forend of your Mossberg 500 with a 14" barrel or a 6 3/4" forend tube. It features a 6-volt shock-isolated incandescent lamp and three separate switches integrated into the forend: a constant-on rocker switch (left side), a momentary-on pressure pad switch (right side), and a system-disable rocker switch (right side) that locks the light in the OFF position to prevent accidental activation during covert operations, transport, or storage. The standard P60 lamp assembly (included) produces 65 lumens of optimally focused light for one hour per set of batteries, while the P61 lamp assembly (optional) produces 120 lumens for 20 minutes. A molded-in polymer high-friction pad enhances grip in wet or cold conditions Max output : 65 Lumens Bezel diameter : 1.25" Weight: 1.1 lbs.