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Arisaka Tailcap Adapter – Streamlight Protac Railmount 1 & 2


Only 2 left in stock

SKU: TA-RM12 Categories: , , Tags: ,

Arisaka Tailcap Adapter – Streamlight Protac Railmount 1 & 2

The Arisaka Tailcap Adapter was designed to allow the Streamlight Protac Railmount 1 and 2 to use the Surefire Scout tailcaps and remote switches. In particular, the Protac Rail Mount lights can now be used with the Surefire SR-D-IT and TNVC/Unity TAPS dual switches, which are commonly paired with laser/illuminators like the ATPIAL and DBAL series. The Arisaka Tailcap Adapter is CNC machined from 6061-T6 aluminum and MIL-A-8625 Type III hard coat anodized. Made in the USA.

One of the main flaws of the Protac Rail Mount lights is also addressed: Streamlight did not design a front battery spring into the light, so under recoil the battery can come off the front contact and cause the light to flicker or blink. To help prevent this behavior the adapter includes a removable buffer o-ring on the front face which ensures the battery cannot move rearward while firing.

Streamlight’s TEN-TAP Programming is still fully functional with the use of Surefire tailcaps and remote switches in combination with the Arisaka Tailcap Adapter. The current setting is not altered unless purposefully changed just like using the stock Streamlight tailcap.

This product is not compatible with the Protac Rail Mount HL-X. A separate version for the HL-X is available.

This adapter requires the use of a Surefire UE or DS tailcap to function.

Compatible Lights

Streamlight Protac Rail Mount 1 & Protac Rail Mount 2

Compatible Tailcaps

Surefire UE (Newest version with black ring where the remote plugs in. The old gray ring version is not compatible), DS & Z68

Compatible Remotes (with Surefire UE or DS tailcap)

Surefire ST07, SR07 & SR-D-IT

Unity TAPS & Hot Button

Modlite Modbutton & Modbutton Lite (Surefire plug)


Diameter 0.852″
Length 0.28″ additional length to light (plus tailcap)
Weight 0.4 oz


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