From the manufacturer

SureFire G2X Series LED Flashlights with Tough Nitrolon Body

SureFire’s G2X LED illumination tools share many features, such as virtually indestructible high-efficiency LED emitters, 600 lumens of maximum output, precision reflectors, and sleek Nitrolon polymer bodies. Their differences let you select the ideal light for your needs.

The G2X Tactical provides a single output level — a brilliant, penetrating 600-lumen beam. It features a lightweight, high-strength Nitrolon polymer body that’s comfortable to hold in cold weather. The G2X Tactical comes with a press/click tailcap switch.

Features

Brilliant tactical-level max output
Precision reflector creates smooth, optimized beam with plenty of reach and surround light
Tough, lightweight Nitrolon polymer body for corrosion resistance and durability

The G2X Tactical is a compact yet powerful polymer-body flashlight designed specifically for tactical use. Providing simplicity of operation and tremendous illuminating power in a small package, it uses a high-efficiency LED--virtually immune to failure since there's no filament to burn out or break--to generate a brilliant, penetrating, perfectly pre-focused 320-lumen beam. The G2X is activated by a tactical tailcap click switch, the same type used on many SureFire WeaponLights for years--partially press for momentary-on; press further until it clicks for constant-on activation. The tough Nitrolon polymer body is smoothly sculpted for a comfortable, secure grip and resists scratches, abrasion, and corrosion. A polycarbonate micro-textured reflector delivers a comparatively wider beam with generous peripheral light.