Nightstick TWM850XL 850 Lumens Handgun LED Light, 245m Beam, Black Anodized Aluminum
- Finish-Color:
- Black Anodized
- OAL:
- 3.75"
- Proofs:
- Chemical/Impact Resistant/Waterproof
- Battery Size:
- CR123A
- Material:
- Aluminum
- Weight:
- 5.40 oz
- Bulb Type:
- LED
- Output:
- 850 Lumens
- Rechargeable:
- No
- Filter Color:
- White
- Switch Type:
- Toggle Switch
- Body Diameter:
- 1.5"
- For Series:
- Glock
- Head Diameter:
- 1.20"
The Nightstick TWM850XL is a compact, high-output weapon-mounted light built for handgun users who need serious illumination at distance. At 850 lumens with a 245-meter effective beam, this tactical light delivers the brightness and throw needed to identify threats or targets far downrange—far beyond what a typical EDC or home-defense light provides. The light mounts via modular rail inserts (included), making it compatible with standard Picatinny rails on most tactical handguns.
What sets the TWM850XL apart is its completely ambidextrous design. Dual toggle switches—one on each side—give you momentary-on and constant-on modes regardless of your shooting hand or how you're holding the gun. That matters when you're in a dynamic situation and need one-handed operation without fumbling for controls. The light is built tough: aircraft-grade 6061-T6 aluminum housing with Type III hard anodized finish, rated for 2-meter drops and IP-X7 waterproofing. It's made to survive the job.
The TWM850XL runs on two CR123 lithium batteries (included) and delivers 1.75 hours of continuous runtime. Note that rechargeable batteries are not compatible—stick with standard CR123s. With a compact footprint and 5.4-ounce weight, the light won't throw off your handgun's balance or printing profile in a holster. For serious shooters who want a weapon light that won't quit when it counts, this is a proven choice.
Key Features
- 850 lumens with 245-meter beam distance for long-range target identification
- Ambidextrous dual toggle switches for momentary and constant-on modes
- Aircraft-grade 6061-T6 aluminum with Type III hard anodized finish
- IP-X7 waterproof rating; rated for 2-meter drops
- Modular rail inserts and mounting hardware included
- Compact, lightweight design (5.4 oz) for minimal handgun balance impact
- Powered by two CR123 lithium batteries (included)
Specifications
| Output | 850 lumens |
| Beam Distance | 245 meters |
| Candela | 15,000 |
| Runtime (Continuous) | 1.75 hours |
| Length | 3.75 inches (95 mm) |
| Width | 1.5 inches (38 mm) |
| Depth | 1.5 inches (38 mm) |
| Head Diameter | 1.2 inches (30 mm) |
| Weight | 5.4 ounces (155 g) |
| Housing Material | Aircraft-grade 6061-T6 aluminum, Type III hard anodized |
| Color | Black |
| Water/Dust Rating | IP-X7 waterproof |
| Drop Rating | 2 meters |
| Light Source | LED |
| Power Source | Two CR123 lithium batteries |
| Battery Compatibility | CR123 batteries only (rechargeable not compatible) |
| Mounting | Modular rail inserts and screws (included); standard Picatinny rails |
| Included Accessories | Rail inserts, mounting screws, Allen wrench, two CR123 batteries |
| Warranty | Limited Lifetime |
Frequently Asked Questions
What guns does the TWM850XL fit?
The light uses modular rail inserts to mount on any handgun with standard Picatinny rail systems. Check your pistol's rail specifications to confirm compatibility.
Can I use rechargeable batteries in the TWM850XL?
No. This light is designed for CR123 lithium batteries only; rechargeable batteries are not compatible.
How long does the light run on a single set of batteries?
In constant-on mode, the TWM850XL delivers 1.75 hours of continuous runtime on two CR123 batteries.
Is the TWM850XL waterproof?
Yes. It has an IP-X7 waterproof rating and is also rated for 2-meter drops, making it durable for field conditions and tactical use.

