LaserMax Guide Rod Mounted Red Laser Sight for the Smith & Wesson M&P Full Size .40 Caliber, 9mm and .357 Sig Model Handguns

• The Smith & Wesson Full Size M&P .40, .357 Sig & 9mm calibers with a genuine LaserMax Guide Rod Laser, as with most of Smith & Wesson's Guide Rod Lasers, replaces the factory guide rod and spring to give you the most rugged and reliable laser sighting system.
• This new addition to the Guide Rod Laser family has a special single sided activation switch which combines the teardrop activation similar to the 1911 switch, with the easy rotating installation of the Sig and XD switches. Once activated, the Guide Rod Laser for the M&P provides you with superior accuracy over various distances. Alignment of the laser is set at the factory and will never lose that alignment, so there's no need for windage & elevation adjustment while on the range, after changing batteries, or accidentally dropping your firearm.

Please Note: Because of Design Change by Smith & Wesson, this Guide Rail Laser will ONLY fit 9mm M&P Guns Manufactured in 2011 and EARLIER!!! It will still fit ALL CURRENT .40 and .357 Sig M&P Handguns!