These lightweight laser sights have a bright 632nm laser with a four point alignment system to maintain accuracy and calibration. Made of 6061-T6 aircraft aluminum alloy, they are engineered to withstand tough conditions. The 1.25oz KT-6132 model comes with a rail mount to fit virtually any weapon with an integrated rail. The 1.6 oz model KT-6332 has an integrated rail mount small enough to fit most, even compact, pistols. They operate with an on/off switch or the included detachable pressure pad switch.The KT6132 is a traditional red tube laser that fits on most pistols with a rail under the barrel. It comes with a standard picatinny rail mount that still gives the operator ease of access to make adjustments. It offers the combination of customization and extended usage to make it the perfect pistol laser for every situation. Features: Quick mounting, goes with on a traditional Picatinny rail mount Customizable to user preference, offers both traditional and pressure switch operations to give the user total control its function to suit their needs Built to last, constructed from 6061 T6 aircraft aluminum alloy with a hardened anodized black matte finish designed to take whatever the situation throws at them Easy adjustment, allows for the user to have easy access to adjust the laser for aiming Extended usage, offering 5 hr of continuous usage on one set of batteries