LaserMax LMSG419G Guide Rod Laser, 5mW Green, 520nM, 20yd Day/300yd Night, Aluminum, for Glock 19 Gen4
$315.00
- Firearm Make Fit:
- Glock
- Finish-Color:
- Black
- Firearm Fit:
- Glock 19 Gen4
- Dot Size:
- .31" @ 7 yds
- Mount Type:
- Guide Rod
- Weight:
- 55 oz
- Laser Color:
- Green
- Wavelength:
- 520nM
- Range:
- 20 yds Day/300 yds Night
- Power:
- 5mW
- Power Switch:
- Ambidextrous On/Off
- Adjustments:
- No
The LaserMax LMSG419G Guide Rod Laser brings a proven aiming solution inside your Glock 19 Gen4 without forcing you to change holsters, grips, or your existing setup. This 5mW green laser (520nM wavelength) mounts directly to your guide rod—the spring and rod assembly you already field-strip—making installation straightforward for anyone comfortable breaking down their pistol. The green beam delivers visibility in daylight out to 20 yards and extends your effective targeting range to 300 yards in low light or darkness, giving you a real edge in home defense, tactical training, or competitive shooting scenarios where speed and target acquisition matter.
LaserMax built this sight to survive what your gun survives. It meets or exceeds military and Homeland Security durability standards, proven through drop tests, sand and salt-fog exposure, temperature and humidity extremes, deep water immersion, and thousands of live-fire rounds. The laser arrives factory-aligned at 20 yards and holds zero—no recalibration needed after battery swaps or extended storage. That accuracy comes from the laser's position as close to the bore centerline as possible, giving you the tightest relationship between where you aim and where you hit across all practical distances.
Control is built into the take-down lever itself, so activation feels familiar and works from either hand. The pulsing beam mode cuts through noise and language barriers, making your muzzle position unmistakable in training, home-defense, or tactical situations. Because it's internal, your gun keeps its factory profile and all your favorite carry holsters and accessories work exactly as they did before—no adapters, no compromises.
Key Features
- Installs inside the guide rod assembly—no gunsmithing required
- 5mW green laser (520nM) visible to 20 yards in daylight, 300 yards at night
- Factory pre-aligned at 20 yards; zero retention across battery changes
- Ambidextrous activation integrated into the take-down lever
- Pulsing beam mode for rapid muzzle awareness
- Mil-Spec and Homeland Security durability; tested through drop, submersion, sand, salt fog, and 20,000+ live-fire rounds
- Aluminum construction
- Compatible with existing holsters and grips
Specifications
| Laser Type | Green (5mW) |
| Wavelength | 520nM |
| Daytime Visibility | 20 yards |
| Nighttime Visibility | 300 yards |
| Compatibility | Glock 19 Gen4 |
| Installation Type | Guide rod mounted |
| Activation | Ambidextrous, integrated into take-down lever |
| Material | Aluminum |
| Factory Alignment | 20 yards (zero-retention) |
Frequently Asked Questions
Will I need to replace my holster to use this guide rod laser?
No. Because the laser mounts internally to the guide rod, your Glock maintains its factory profile. All existing holsters, grips, and accessories continue to work without modification.
How difficult is the installation?
If you can field-strip your Glock 19 Gen4, you can install the LaserMax. No gunsmithing or special tools are required. It's a guide rod swap, and the process takes minutes.
Will the laser stay aligned after I change the battery?
Yes. The laser arrives factory-aligned at 20 yards and never requires re-zeroing after battery replacement or extended storage. The zero is permanent.
Can I use this laser in bright daylight?
The green laser is visible in daylight to approximately 20 yards. In low-light conditions and darkness, the effective range extends to 300 yards, making it ideal for home defense, low-light training, and night shooting.
