500 Lumens in a very tiny package: Perfect.

The TLR-7 Sub is an ultra-compact gun light for subcompact pistols with a 1913 accessory rail. Perfectly sized for the Hellcat, Springfield XD-S and other ultra-compact pistols with 1913 rails on the dustcover, use this light to allow for identification of potential threats before taking action. Features ambidextrous switch for easy operation and produces a 141 meter narrow beam with optimum peripheral illumination. Includes one CR123A lithium battery and mounting kit with key.

Streamlight TLR-7 Sub Ultra-Compact Tactical Gun Light Specificaions and Features:

• 500 Lumens
• 1.5 hours run time
• 141 Meter Beam Distance
• 5,000 Max Candela
• CR123A Lithium Battery (included)
• Length: 2.51 inches
• Weight: 2.39 oz
• Ambidextrous rear switch
• Safe off feature prevents accidental activation; saves batteries
• Rail clamp system securely attaches/detaches quickly and safely with no tools and without putting your hands in front of muzzle
• Durable, anodized machined aluminum construction
• User enabled strobe function
• Securely fits a broad range of slim subcompact handguns
• IPX7 waterproof to 1m for 30 minutes