Surefire X300-B Turbo Black 650-Lumen Weapon Light

The Surefire X300-B Turbo gives 650 lumens at 66,000 candela in black matte, with a thumbscrew attachment and two CR123A cells.

Candela rather than lumens is the figure to read here. Sixty-six thousand candela concentrates 650 lumens into a beam that reaches further than the 1,000 lumen Ultra does, because almost all of it goes one way. Total output tells you how much light exists; candela tells you how much of it arrives at distance.

The thumbscrew attachment tightens by hand onto the rail and stays put. It costs less than the lever latch A version and suits a light that gets fitted once rather than moved between firearms. Two CR123A cells hold voltage in cold and store for a decade without losing capacity. Explore more weapon lights.

• 66,000 candela from 650 lumens
• Reaches further than the 1,000 lumen Ultra
• Thumbscrew attachment, for a light fitted once
• Black matte on two CR123A cells