Replacement momentary tailcap for Arisaka 300, 600, and 18-series light bodies. Features twist-for-constant-on operation with adjustable threading to prevent accidental activation.
The Arisaka Momentary Tailcap is a precision-engineered replacement switch designed for serious shooters who demand reliability in their tactical lighting systems.
This tailcap fits the following Arisaka Defense light bodies:
It also works with Surefire Scout-pattern lights, making it a versatile upgrade option.
Momentary activation is the default mode—press the tailcap for instant illumination, release to extinguish. For sustained operation, simply twist the tailcap fully into the light body for constant-on mode.
The adjustable threading design allows you to back the tailcap out approximately two turns, effectively disabling accidental activation during storage or transport. This is particularly valuable for duty weapons or lights stored in bags and cases where unintended switch presses could occur.
The black anodized finish provides a durable, non-reflective surface that resists corrosion and wear. The tailcap maintains the compact profile Arisaka Defense is known for, adding minimal bulk to your light system.
Whether you're upgrading an existing Arisaka light or replacing a worn component, this momentary tailcap delivers the dependable switching interface serious shooters expect.