Availability: In Stock
The SureFire X400U is a dedicated weapon light and laser combo built for pistols and long guns equipped with rail systems. Designed around the realities of defensive use, this 1,000-lumen LED unit pairs a bright, reliable light source with an integrated 5-milliwatt red laser to help you get on target quickly. The hybrid beam design produces a large central spot surrounded by useful spill light—a practical mix for the distances where most shooters operate.
Built to run reliably in hard use, the X400U features a Mil-Spec hard-anodized aluminum body that handles recoil, weathering, and routine wear without flinching. The LED is matched with a TIR lens to shape 1,000 lumens into a smooth, long-reaching beam with an effective range of 213 meters. All of this comes in a compact, lightweight package that won't bloat your pistol or add unnecessary bulk to your rifle setup.
Switching is intuitive: ambidextrous momentary and constant-on buttons let you work the light intuitively from either hand. The laser itself—a traditional 635-nanometer red—is bright enough to see in daylight conditions, making it genuinely useful for quick target acquisition rather than a gimmick. If you want to add a remote pressure switch down the road, the X400U accepts optional DG and XT remote controllers without forcing you to change your grip or alter how you handle the gun.
Rail compatibility is broad: the X400U mounts securely to Picatinny, Weaver, and Glock rail platforms, so whether you're running it on a duty pistol, a home-defense rifle, or a training gun, you'll find a solid mounting solution. It's the kind of light that earns its place on a working gun—bright, durable, and designed by people who understand what armed professionals actually need.
| Light Output | 1,000 lumens |
| Beam Range | 213 meters |
| Laser Type | Red laser, 5 milliwatts, 635 nanometers |
| Switching | Ambidextrous momentary and constant-on |
| Body Material | Mil-Spec hard-anodized aluminum |
| Rail Compatibility | Picatinny, Weaver, Glock rail mounts |
| Color | Black anodized |
The X400U mounts securely to Picatinny, Weaver, and Glock rail platforms, covering most modern pistols and long guns equipped with accessory rails.
Yes. The X400U is compatible with optional SureFire DG and XT remote pressure-activated switches, and you can install them without altering your grip or handling technique.
The 1,000-lumen beam has an effective range of 213 meters, making it useful for close- to medium-range engagements where most defensive and training scenarios unfold.
Yes. The 5-milliwatt red laser at 635 nanometers is bright enough to see in daylight conditions, making it practical for real-world target acquisition rather than low-light-only tool.
SKU: 115649267 • Width: 4.7in • Height: 1.7in • Depth: 7.9in • Weight: 0.5oz
Availability: In Stock
The SureFire X400U is a dedicated weapon light and laser combo built for pistols and long guns equipped with rail systems. Designed around the realities of defensive use, this 1,000-lumen LED unit pairs a bright, reliable light source with an integrated 5-milliwatt red laser to help you get on target quickly. The hybrid beam design produces a large central spot surrounded by useful spill light—a practical mix for the distances where most shooters operate.
Built to run reliably in hard use, the X400U features a Mil-Spec hard-anodized aluminum body that handles recoil, weathering, and routine wear without flinching. The LED is matched with a TIR lens to shape 1,000 lumens into a smooth, long-reaching beam with an effective range of 213 meters. All of this comes in a compact, lightweight package that won't bloat your pistol or add unnecessary bulk to your rifle setup.
Switching is intuitive: ambidextrous momentary and constant-on buttons let you work the light intuitively from either hand. The laser itself—a traditional 635-nanometer red—is bright enough to see in daylight conditions, making it genuinely useful for quick target acquisition rather than a gimmick. If you want to add a remote pressure switch down the road, the X400U accepts optional DG and XT remote controllers without forcing you to change your grip or alter how you handle the gun.
Rail compatibility is broad: the X400U mounts securely to Picatinny, Weaver, and Glock rail platforms, so whether you're running it on a duty pistol, a home-defense rifle, or a training gun, you'll find a solid mounting solution. It's the kind of light that earns its place on a working gun—bright, durable, and designed by people who understand what armed professionals actually need.
| Light Output | 1,000 lumens |
| Beam Range | 213 meters |
| Laser Type | Red laser, 5 milliwatts, 635 nanometers |
| Switching | Ambidextrous momentary and constant-on |
| Body Material | Mil-Spec hard-anodized aluminum |
| Rail Compatibility | Picatinny, Weaver, Glock rail mounts |
| Color | Black anodized |
The X400U mounts securely to Picatinny, Weaver, and Glock rail platforms, covering most modern pistols and long guns equipped with accessory rails.
Yes. The X400U is compatible with optional SureFire DG and XT remote pressure-activated switches, and you can install them without altering your grip or handling technique.
The 1,000-lumen beam has an effective range of 213 meters, making it useful for close- to medium-range engagements where most defensive and training scenarios unfold.
Yes. The 5-milliwatt red laser at 635 nanometers is bright enough to see in daylight conditions, making it practical for real-world target acquisition rather than low-light-only tool.
SKU: 115649267 • Width: 4.7in • Height: 1.7in • Depth: 7.9in • Weight: 0.5oz