Crimson Trace LG-420 Laserguard Sig P320 Red Laser

The Crimson Trace LG-420 Laserguard is a dedicated red laser sight designed for use with Sig Sauer P320 pistols (fits full-size and compact M17/M18 models; does not fit subcompact frames). It installs to the trigger guard for a low-profile mounting position and uses Crimson Trace’s Instinctive Activation with a front pressure pad. The unit offers user-adjustable windage and elevation and a quick-change battery cover that allows replacement without removing the sight. Typical single-battery run time is approximately four hours when using the specified CR1/3N battery.

Key Specifications

• The unit fits Sig P320 (excludes subcompact); M17/M18 compatible.
• The laser color is Red.
• The rated output power is 5mW.
• The laser wavelength is 633nM.
• The effective visible range is listed as 50 ft.
• The power source is a CR1/3N battery with approximately 4 hours runtime per battery under typical use.
• The dot size is approximately 0.50″ at 50 ft.
• The mounting type is the trigger guard style Laserguard.
• The unit weight is 1.60 oz.
• The sight provides user-adjustable windage and elevation.

Designed for straightforward installation and intuitive use, the LG-420 offers a low-profile aiming solution that keeps controls simple and immediate. Its combination of a trigger-guard mount, front activation pad, and quick-change battery cover makes it a practical choice for shooters who prioritize a durable, easy-to-operate laser accessory that integrates with Sig P320 full-size platforms.