LaserMax Guide Rod Green Laser Sight for Glock 20,21, 41 Gen 4

The LaserMax guide rod laser sights for GLOCK Gen4 pistols give you the additional convenience of a laser sight with no external additions to your weapon. Unlike all other laser sights, the guide rod laser is completely internal and simply replaces the factory guide rod and take down lever. With the guide rod sighting system there is no need to replace holsters, remove tactical lights or grips because the laser sight fits right into your current setup with no gunsmithing required. Not only are t