Lasermax Guide Rod Laser Sights for SiGARMS Pistols is the world's only totally internal laser sight. The laser sight aligns with the barrel for maximum accuracy, and features fingertip activation on the take-down lever. The laser rod replaces your pistol's guide system - completely internal, nothing external. With the LaserMax Guide Rod Laser, you can keep your holster, keep your tact lights, keep your favorite grips. This LaserMax Laser Sight features an ambidextrous switch built into the customized take-down levers - simply press to turn the laser on or off. Deliberate on/off activation is highly desirable in a tactical or personal defense situation!
LaserMax internal guide rods are extremely rugged - they meet or exceed both Mil-Spec and Homeland Security durability test standards (drop tests, blowing sand, temperature and humidity extremes, salt water fog, deep water immersion, 20,000+ rounds live fire). These laser sights are also simple to install, and can be installed in mere minutes with no gunsmithing. If you can field-strip your gun, you can install your LaserMax sighting laser.
The Laser Max Internal Guide Rod lasers come permanently aligned from the factory* for center-of-mass accuracy at 20 yards. It will never drift out of alignment. There is no need to re-zero after changing batteries. As close to the bore of the firearm as possible, positioning allows for the closest and most consistent relationship between your point of aim and point of impact (POA/POI) over all shooting distances - especially useful for moving targets.
The LaserMax Internal Laser Sight uses a Hi-Vis Pulsating Beam. The pulsating effect gives effortless awareness of muzzle direction, and transcends language barriers. The LaserMax sight can be used outdoors from dusk till dawn, or indoors round-the-clock. IR versions optimized for NVG characteristics.
Please note: SiG P229 is available in 9mm, .357 and .40 caliber. The LMS-2291 fits all versions of the P229, but it is essential that the correct recoil spring be used. LaserMax provides two springs for this purpose. Use the braided spring for 9mm. Use the music wire spring for .357 and .40 caliber. Failure to do so will damage the laser and voids the warranty.