SureFire M340DFTBKPRO Scout Light Pro - 300/550 Lumens Rifle Light, Black Aluminum

The SureFire M340DFTBKPRO Scout Light Pro is a dual-fuel rifle light engineered for shooters who need serious reach without sacrificing everyday practicality. This compact weapon light delivers a high-candela beam ideal for long-range target identification on precision rifles, tactical carbines, and hunting setups where distance matters. Built on SureFire's proven Scout platform, the M340DFT combines a tight, penetrating beam with enough spill light to maintain situational awareness in tight quarters—a balance most dedicated rifle lights struggle with.

What sets the Scout Light Pro apart is its dual-fuel flexibility: run it on the included SF18350 rechargeable lithium-ion battery for maximum output (550 lumens, 71,000 candela, 45-minute runtime), or drop in a single CR123A primary cell when you need simplicity and don't require peak performance. That versatility means you're never stuck waiting for a charge or scrambling for batteries in the field. The precision reflector is the real story here—it throws a focused beam to 533 meters on rechargeable power, making it SureFire's farthest-reaching long gun weapon light to date in such a compact package.

The Low-Profile Mount (LPM) is purpose-built for modern rifle setups. It attaches securely to any MIL-STD-1913 or M-LOK rail and lets you adjust the light's position relative to your optics, handguard, and other accessories—no guessing, no compromises. The body is aerospace-grade aluminum with Mil-Spec hard-anodized finish and O-ring sealing, rated IPX7 waterproof. Activation is via the ZE68 pushbutton with momentary and constant-on modes and a protective shroud to prevent snags. Compatible with remote tape switches for hands-free operation on slings or support-hand positions.

This is a rifle light built for serious work: competition, precision hunting, and serious home defense where you may need to ID targets at distance. It's rugged, reliable, and doesn't ask you to choose between reach and practicality.

Key Features

• Dual-fuel operation: 550 lumens and 71,000 candela with SF18350 rechargeable battery; 300 lumens and 33,000 candela with single CR123A primary
• High-candela precision reflector optimized for long-range target identification
• Farthest-reaching beam of any SureFire Scout Light, with 533-meter beam distance on rechargeable battery
• Low-Profile Mount (LPM) allows adjustable positioning on any MIL-STD-1913 or M-LOK rail
• Lightweight aerospace aluminum construction with Mil-Spec hard-anodized finish
• IPX7 waterproof rating (1 meter, 30 minutes)
• ZE68 momentary/constant-on pushbutton with protective shroud
• Compatible with remote tape switches for hands-free operation
• Includes SF18350 rechargeable lithium-ion battery

Specifications

Frequently Asked Questions

Will this light fit my rail? What about mounting compatibility?

The M340DFT Scout Light Pro uses the Low-Profile Mount (LPM), which attaches to any MIL-STD-1913 (Picatinny) or M-LOK rail. The LPM is adjustable, so you can position the light to clear your optics, handguard, and other accessories.

Can I use regular CR123A batteries, or do I need the rechargeable one?

You can use either. The included SF18350 rechargeable lithium-ion battery gives you full output (550 lumens, 71,000 candela, and 45 minutes runtime). A single CR123A primary battery will run the light at reduced output (300 lumens, 33,000 candela). Choose rechargeable for peak performance and field use, or go with a CR123A for simplicity when charging isn't an option.

Is this light waterproof?

Yes. The M340DFT is rated IPX7 waterproof, meaning it meets the waterproof test standard at 1 meter for 30 minutes. The O-ring sealing and hard-anodized aluminum body protect against the elements.

What makes this light good for long-range work?

The precision reflector is designed to produce a tight, high-candela beam that throws a focused light far downrange—up to 533 meters on the rechargeable battery. This makes it ideal for target identification at distance on precision rifles and hunting setups, while the spill light still maintains situational awareness up close.