The SureFire X400U-A Ultra pairs SureFire's 1000-lumen Ultra weapon light with an integrated green laser — combining a wide, far-reaching beam (11,300 candela) with a fast aiming reference for handgun platforms.
Three modes (light, laser, or light + laser) cover any scenario, the Rail-Lock system clamps securely without hands forward of the muzzle, and ambidextrous switches give intuitive control. Aerospace-aluminium body, O-ring sealed (IPX7).
How It Compares
Prefer a red laser? See the X400U-A with red laser. Want light only? The X300U-A. Browse all weapon lights and the wider SureFire range; read our best weapon lights guide.
Ideal For
- Duty and defensive pistols
- Tactical applications; low-light use
- Shooters wanting light + laser aiming
Key Features
- 1000-lumen white light (11,300 cd, ~213 m)
- Integrated green laser (<5 mW)
- Light / laser / light + laser modes
- Rail-Lock rapid-attach mounting; ambidextrous switching
- Aerospace aluminium, IPX7
Technical Specifications
| White Light |
1000 lumens / 11,300 candela |
| Beam Distance |
~213 m |
| Laser |
Green (<5 mW) |
| Battery |
2× CR123A lithium |
| Runtime |
~1.25 hours |
| Mount |
Rail-Lock (universal / Picatinny) |
| Length / Weight |
3.76 in / 4.9 oz |
| Waterproof |
IPX7 |
What's Included
- SureFire X400U-A Ultra (green laser)
- Rail-Lock mounting system, hardware, 2× CR123A batteries, manual
UK Delivery & Support
UK-stocked and dispatched tracked from our UK warehouse — no import duties or customs delays — backed by UK-based support and SureFire's warranty.
Frequently Asked Questions
Green or red laser?
This is the green-laser version (more visible to the eye in daylight); a red-laser version is also available.
What modes does it have?
Light only, laser only, or light + laser.
Will it fit my pistol?
It mounts to standard Picatinny/universal rails via Rail-Lock.
