Weapon lasers project a visible or infrared beam onto a target to show where a weapon is pointed. The category covers visible red and green lasers, infrared lasers and illuminators for night vision, and combination units that add a white light. Military users, law enforcement officers, and home defenders all rely on weapon lasers for fast aiming in low light and at night.

Options include visible lasers, infrared lasers, and multi-function laser and light units from top brands like Holosun. Models differ in beam color, number of functions, size, and mounting.

Choose the laser based on how it will be used. A visible laser gives the shooter a quick aiming reference in daylight or low light, which helps from awkward positions and at close range, and green beams are generally easier to see in bright light than red. An infrared laser can only be seen through night vision, so it is used with night vision goggles, but anyone else using night vision can see it too. An infrared illuminator floods an area with infrared light so a night vision device can see more in very dark conditions. Combination units put several of these, and sometimes a white light, in one housing, so the shooter can switch between daytime and night vision use without changing devices. Lasers mount to a rail and need to be zeroed to the weapon, so plan the rail space together with the weapon light. Lasers can injure eyes, so keep the beam on the target and follow the manufacturer's safety guidance.

Pair a laser with a rifle light or pistol light for low-light work. See more lights and optics for the rest of the setup.