Contoured housing securely attaches to weapon; Bullet Type: Full Metal Jacket; 100 lumens; 89m beam distance; runs 1 hour (LED/Laser combo); Red aiming laser (640-660nm) for long-range targeting. Has three modes: LED only, LED/laser combo, and laser only; Push-button switch on both sides for easy operation for right or left-handed shooters; Batteries can be replaced while light remains mounted on gun; no need to re-sight laser after battery change; Uses two CR1/3N lithium batteries (included); Windage and elevation adjustment screws mounted in bushing for dependable zero retention of laser; Durable, impact-resistant polymer construction; 1m impact resistance tested; Serialized for positive identification