ARISAKA TAILCP ADP PROTAC R MNT HL-X

The Arisaka Defense TAILCP ADP PROTAC R MNT HL-X is a precision-engineered tailcap adapter designed to enhance the functionality of Streamlight ProTac Rail Mount HL-X lights. This adapter facilitates the integration of Surefire Scout tailcaps and remote switches, expanding the compatibility of your lighting setup with widely used Surefire SR-D-IT and TNVC/Unity TAPS dual switches. These switches are often paired with laser aiming devices such as the ATPIAL and DBAL series, making this adapter a valuable addition for users seeking greater modularity.

One notable feature of the Arisaka Tailcap Adapter is its ability to address a common issue with the Protac Rail Mount lights: the lack of a front battery spring, which can cause battery movement and intermittent light flickering under recoil. The adapter includes two o-rings—one for CR123 batteries and another for 18650 cells—that secure the battery in place, ensuring consistent contact and reliable performance.

Constructed with a durable anodized finish, this adapter requires the use of a Surefire UE or DS tailcap (sold separately) and is not compatible with the Protac 2.0 Rail Mount Lights or the Rail Mount HL-X Laser model. The Arisaka Defense TAILCP ADP PROTAC R MNT HL-X is a practical upgrade for users looking to optimize their ProTac lighting systems.