Combat Veteran Jeff Gurwitch Reviews the New INFORCE ARC

Jeff Gurwitch has spent enough time around rifles, weapon lights, and professional shooters to know when a piece of gear is useful and when it is simply loud marketing. A retired U.S. Special Forces Master Sergeant, combat veteran, competitive shooter, instructor, and longtime tactical writer, Gurwitch brings a rare mix of operational experience and technical curiosity to his gear reviews. His YouTube channel, Modern Tactical Shooting, recently launched a new series called “Tactically Interesting,” where he covers gear, trends, and developments he finds worth discussing in the firearms world and tactical community.

In the first installment, Gurwitch moves across several subjects, including modern fighting loadouts in Ukraine, changes in helmet and rifle preferences, and the way tactical gear has evolved since the Global War on Terror. Tucked inside that broader discussion is a review of the INFORCE ARC 650 LR-M, a high-output, modular weapon light that caught his attention for a simple reason: it performed.

That matters because Gurwitch is not new to INFORCE. Back in 2011, he reviewed the original INFORCE WML for DefenseReview.com and praised its controls, rifle-friendly ergonomics, and resistance to accidental white-light discharges. He was already paying attention to the details that matter when a light is mounted to a fighting rifle: whether the shooter can activate it without breaking grip, whether the switch can be bumped on by mistake, and whether the layout makes sense under stress.

More than a decade later, his review of the ARC 650 LR-M shows how far the platform has come.

A Weapon Light Built for Modern Expectations

The original INFORCE WML was built around polymer construction and emphasized light weight and direct thumb activation. It made sense for the rifle setups of its era, especially the slicker, slimmer AR builds that grew popular during the GWOT years. Gurwitch’s 2011 review focused heavily on that interface, particularly the 45-degree activation button and the way it worked naturally with a forward C-clamp grip.

The ARC 650 LR-M is a different animal. This new modular light is built from 6061-T6 aluminum, uses a Type III hard coat anodized finish, carries an IPX8 waterproof rating to 20 meters, and meets MIL-STD-810H shock and drop standards. It is also built around the Scout footprint and thread pattern, giving users more flexibility with mounts, tailcaps, and compatible accessories.

That shift matters. Shooters today expect weapon lights to do more than survive a range day. Law enforcement officers, prepared citizens, military personnel, and serious rifle owners increasingly want high-output illumination, rugged construction, modular mounting, and controls that do not require a training scar to operate correctly.

The ARC 650 LR-M answers that with a 1,400-lumen output, 90,000 candela hotspot, and a beam distance rated to 600 yards. Those numbers put it firmly in the modern high-performance weapon light category, where candela matters just as much as raw lumen count. Lumens help describe total visible light output, while candela gives a better sense of beam intensity and throw. In plain English, the ARC 650 LR-M doesn’t merely light up the room in front of you. It gives you reach, definition, and target identification at rifle range.

Gurwitch’s Take: Output That Gets Attention

The ARC 650 LR-M’s brightness immediately stood out to Gurwitch. He compared it against lights he had seen in professional use and found the ARC’s 1,200-to-1,400-lumen output impressive, especially when contrasted with older or lower-output lights still encountered in military circles.

It would be good to remember that this praise comes from someone who is not easily impressed by tactical gear. Gurwitch has served, trained, competed, written, tested products, and watched trends come and go.

The official specs support his observations. The ARC 650 LR-M’s beam clocks in at 1,400 lumens and 90,000 candela, with a long-range head designed for target identification without giving up usable spill for closer work. That balance is important because a rifle light that throws far but leaves the shooter himself blind in close quarters creates its own problem. A good duty-grade light needs reach, but it also needs enough surrounding light to help the user move, process space, and avoid tunnel vision.

Runtime That Beat Expectations

Battery life was another highlight. INFORCE lists the ARC 650 LR-M with 2 hours and 45 minutes of runtime on a rechargeable protected 18650 battery. It also supports dual-fuel use with two CR123A batteries as a backup option, which is a practical advantage for users, departments, and units that already stock CR123 batteries.

In Gurwitch’s test, the light reportedly exceeded its listed runtime and ran for more than three and a half hours on a single charge.

For a patrol rifle, home-defense rifle, training carbine, or professional setup, runtime is not a luxury feature. A light that drains quickly forces the user to manage batteries instead of focusing on the task at hand. The ARC 650 LR-M’s 18650 power source gives it enough endurance for serious use, while the CR123 backup capability gives the user a fallback when recharging is not convenient.

Simple Controls Are Still a Tactical Advantage

One of the most interesting parts of Gurwitch’s review is his preference for the ARC’s positive push-button interface over pressure pads. That opinion fits with what he wrote all the way back in 2011, when he praised the original WML for reducing the risk of accidental white-light discharges. In that older review, Gurwitch described how conventional push-button lights could be bumped on during night movement, sometimes causing a teammate to accidentally light up the surrounding area. He tested the WML’s button design by striking it against his body and knees and found that it resisted accidental activation unless its button was pressed directly against something finger-sized.

The ARC 650 has a similarly direct control scheme. Its rear switch supports momentary activation with a partial press and constant-on activation with a full press and click. That gives shooters a familiar interface without forcing them to chase modes, manage fragile wiring, or rely on a switch layout that may not survive hard use.

For Gurwitch, that simplicity appears to be part of the appeal. Under stress, a light should not require a flowchart. The shooter needs to know where the switch is, how it behaves, and whether it will do the same thing every time.

The Bottom Line

Jeff Gurwitch’s review of the INFORCE ARC 650 LR-M gives shooters a practical look at how the light performs from someone who has spent decades around rifles, professional shooters, and hard-use gear.

His praise for INFORCE’s new light centers on the features that matter most: high output, strong runtime, positive controls, and a layout that avoids unnecessary complication. For shooters who want a rifle-mounted light with long-range performance, rugged construction, flexible mounting, and a straightforward user interface, the ARC 650 LR-M is built for serious consideration.

More than ten years after Gurwitch first reviewed the original INFORCE WML, the ARC 650 LR-M shows how far the platform has come, with stronger output, tougher construction, more flexible mounting, and a more capable overall design that still preserves the same core priority: a weapon light has to work naturally when the shooter needs it.