LaserMax LMSG419G Green Guide Rod Laser Sight for Glock 19 Gen 4 - Black

The LaserMax LMSG419G is an internally-mounted green guide rod laser sight purpose-built for the Glock 19 Gen 4. It replaces the factory guide rod and recoil spring assembly, tucking the entire laser and electronics inside the slide channel for a clean, snag-free profile that does not change the pistol's grip dimensions or limit holster selection.

At the core of the system is a 5mW green laser operating at a 520nM wavelength, producing a tight 0.63" dot at 20 yards with a usable range out to 50 meters. The green beam is significantly easier for the human eye to pick up than red, especially in well-lit or daytime conditions, which speeds up target acquisition. The unit is user programmable for either a steady beam or a pulse mode, and is controlled through a distinct ambidextrous ON/OFF switch placed for natural activation by both left- and right-handed shooters.

Installation is straightforward with no gunsmithing required: field-strip the pistol, swap the factory guide assembly for the LaserMax unit, and reassemble. The sight runs on a common 393 silver oxide battery and adds just 0.55 oz to the slide, so there is no perceptible change in handling. Finished in matte black and designed as a permanent, low-profile addition to the slide, the LMSG419G is a reliable aiming solution for defensive, duty, and recreational carry.