Surefire X400UH-A-RD Ultra Masterfire Pistol Light

The Surefire X400UH-A-RD Ultra Masterfire is a compact, rail-mounted light and red laser module engineered for use on pistols and compatible with SureFire’s Masterfire Rapid Deploy Holster. It uses a recoil-resistant LED and a proprietary TIR lens to produce a focused beam with generous spill, and a five-milliwatt red laser with adjustable windage and elevation. The unit is built from aerospace-grade aluminum with a Mil-Spec hard-anodized finish and sealed with O-rings and gaskets for weather resistance. Ambidextrous rear-mounted switching provides simple one-finger control and it secures to universal and Picatinny-style rails via a thumbscrew mount.

Key Specifications

• The model is X400UH-A-RD designed for Masterfire compatibility.
• The laser outputs 5.0 mW and operates at a 635 nm wavelength.
• The power source is a CR123A battery.
• The body material is aluminum with a black Mil-Spec hard-anodized finish.
• The overall length measures 3.70 inches.
• The unit weighs 4.90 oz.
• The mount type is Thumbscrew Rail Mount/Universal Rail/Picatinny Rail.
• The switch is ambidextrous and located at the rear of the body.
• The product is rated IPX4 water resistant.

Rugged, compact, and purpose-built for rapid deployment, the X400UH-A-RD pairs a focused LED beam with a reliable red laser and holster interoperability to streamline draw and target acquisition. Its durable aluminum construction and weatherproof sealing make it a practical choice for users who need a dependable light-and-laser combination that mounts securely to standard pistol rails.