The LASERMAX Laser Sight For Sigarms P239 357/40 (LMS-2391) is the only internal laser sighting device for SIGARMS semi-automatic handguns.
Installation takes 5 minutes. If you can field-strip your gun, you can install your LaserMax sight - no gunsmithing required! To activate the laser, simply push IN on the switch pin, which is located inside the takedown lever. Pushing in from either side will turn the laser on; the middle position is off.
The laser features a pulsating beam for increased visibility and faster aiming, and runs on standard silver-oxide watch batteries. It will never drift out of alignment. There is no need to re-zero after changing batteries.
LaserMax gunsight stays aligned even in rough conditions. While LaserMax gives a tactical advantage, it is also extremely useful in firearms training. The laser sight can be used in either live or dry fire conditions to reveal flinching or anticipation of recoil.
Please Note:
1. Expect to change your batteries once a year with typical usage.
2. Cold weather batteries are available for some models. Call Factory for details.
3. Battery operating temperature is 15°F-120°F.