A sight is an aiming device used to assist in visually aligning a weapon with the intended target. There are a number of sighting systems available for firearms including iron sights, optics and lasers.
Iron Sights
Traditional iron sights come equipped on just about every firearm, even if it has other types of sights. Iron sights work by providing the shooter with horizontal and vertical reference points. The sights align the target with the firearm, helping the shooter make a more accurate shot.
Optics
Slide-mounted optics, also known as red dot sights (RDS), can be mounted on top of the pistol slide using a mounting plate or a slide cut. The mounting plate is installed in place of the rear sight, and the optic directly mounted to the plate. Alternatively, cuts can be machined into the slide itself, and the optics mount directly to the slide often in front of the rear iron sights.
Lasers
Lasers are a part of the military, law enforcement and civilian markets, and they generally work within the light fit on the bottom of the handgun frame (or accessory rail). Lasers can be an effective aiming device and can cut down time-to-target. They can also, however, interfere with retention systems and holster fit. Be sure to check for compatibility with make and model designations.
