4MR Ranch got good things to say about the RovyVon GL4 Pro+ Upgraded Crossbolt 4-in-1 Rail-Mounted Flashlight with Adjust Rail Adapter. The RovyVon GL4 Pro+ is a rail-mounted flashlight featuring a 4-in-1 light system. This combined white light (400 lumens, 5200cd), green beam, IR illuminator and 850 nm IR beam, the 520 nm green beam (<5mW, Class 3R) and 850nm IR beam (<0.7mW, Class I) allow for both visible and low-light use.

It includes six modes: White light, visible green beam, white light plus green beam, infrared illuminator plus infrared beam, infrared illuminator, and infrared beam, and is IPX8 waterproof. The light features a new screw-mounted design with an adjustable rail clamp and four screw holes, offering compatibility with 1913 and GL rails (adapter included). Its mode switch has a tab for easy operation, even with gloves, which can also be hidden to prevent accidental activation.

The GL4 Pro+ offers independent switches for vertical and horizontal adjustment for precise zeroing, which is maintained even after battery replacement. It operates on two CR123A batteries (included) and is also compatible with rechargeable lithium-ion batteries, which can be swapped without removing the unit from the rail.