Nightstick TWM-854XL 850 Lumen Weapon-Mounted Long Gun Light

The Nightstick TWM-854XL Xtreme Lumens Tactical Weapon-Mounted Long Gun Light is a rail-mounted illumination device engineered to deliver high-output white light for rifles and other long guns. Producing 850 lumens with a focused beam, it supports momentary-on and constant-on activation through an included remote pressure switch for controlled illumination during use.

Developed by Nightstick, the TWM-854XL is intended for shooters who need a durable, Picatinny-mounted light for target identification and general illumination at distance. Its compact aluminum housing and long-gun-specific mounting system make it suitable for range use, duty-oriented setups, or utility applications where reliable white light is required. The light is designed around a simple, battery-powered operating system using CR123 lithium cells to ensure consistent output without recharge-related variables.

Key Features

• High-output LED delivering 850 lumens of white light

• Usable beam distance of approximately 245 meters

• Momentary-on and constant-on operation via remote pressure switch

• Designed specifically for Picatinny rail mounting on long guns

• Aircraft-grade 6061-T6 aluminum housing with Type III hard anodized finish

• Impact-rated for drops up to 2 meters

• Remote pressure switch includes pressure pad with approximately 8-inch cable

• Powered by two CR123 lithium primary batteries (included; non-rechargeable only)

Specifications & Build

The TWM-854XL is constructed from aircraft-grade 6061-T6 aluminum with a Type III hard anodized finish for abrasion and corrosion resistance. Overall length measures 3.75 inches (95 mm), with a width and depth of 1.5 inches (35 mm). The light weighs approximately 5.4 ounces (142 g) with batteries installed. Illumination is provided by a high-efficiency LED, and power is supplied by two CR123 lithium primary batteries. Rechargeable batteries are not supported.

• Length: 3.75 in

• Weight: 5.4 oz

• Output: 850 lumens

• Beam distance: 245 m

• Power source: 2 × CR123 lithium batteries

Compatibility & Intended Use

The Nightstick TWM-854XL is designed for attachment to standard Picatinny rails found on rifles and shotguns. Typical configurations include mounting the light forward on the handguard with the remote pressure pad secured along the rail or stock for easy activation. It can serve as a primary weapon-mounted light for range shooting, duty-style setups, or general-purpose illumination on compatible long guns. The pressure switch allows controlled activation without shifting grip or hand position.

What’s Included

• Nightstick TWM-854XL weapon-mounted long gun light

• Installed remote pressure switch with pressure pad and ~8″ cable

• Picatinny rail connector

• Alcohol cleaning pad

• Two adhesive-backed hook-and-loop mounting strips

• One set of spare cross-rail inserts and mounting screws

• Allen wrench

• Two CR123 lithium batteries

The Nightstick TWM-854XL provides a straightforward, high-output lighting solution for long-gun platforms, combining durable construction, Picatinny compatibility, and pressure-switch operation in a compact package.