The small arms collimator (SAC) is a very precise, advanced optical device that allows shooters to check zero and/ or re-zero weapons in just a few seconds in any environment— without live fire. By ensuring that weapon, sight system, and shooter are always properly tuned to each other (properly zeroed) the SAC helps maximize the capabilities of each. It can also be used to speed up the initial zero process, as a training aid when teaching marksmanship fundamentals, and to help quickly diagnose problems with weapons, sights, or mounts.
Small Arms Collimators work with iron sights, optical sights (including Aimpoint, EOTech, and other red dot sights AND/ OR powered scopes like the Leupold Mk4), and night vision sights. They are available for all military weapons up to 40mm (i.e. M4, M16, M24, M40, M110, M107, M249, M240, M2, Mk19...). Thermal Small Arms Collimators (TiSAC) are available for use with thermal sights. Laser Small Arms Collimators (LSAC) are available for use with aiming lasers. A combination iron/ optic/ NV SAC and laser SAC is also available.