Arisaka Tailcap Adapter Streamlight ProTac Rail Mount 1 & 2

The Arisaka Tailcap Adapter Streamlight ProTac Rail Mount 1 and 2 allows these lights to use Surefire Scout tailcaps and remote switches. In particular, the Protac Rail Mount lights can now be used with the Surefire SR-D-IT and Unity Axon dual switches, which are commonly paired with laser/illuminators like the ATPIAL and DBAL series.

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.

Installation note – This product is not compatible with the ProTac 2.0 Rail Mount Lights, but is compatible with the ProTac Rail Mount 2 Lights. Please double check the name of your light before ordering. This adapter requires the use of a Surefire UE, DS or Unity Tactical Gascap tailcap to function, which is not included.
This product is not compatible with the Protac Rail Mount HL-X. A separate version for the HL-X is available here.

Specifications
Diameter: 0.852″
Length: 0.28″ additional length to light (plus tailcap)
Weight: 0.4 oz
Material: 6061-T651 aluminum
Coating: MIL-A-8625 Type III hard coat anodized

Compatible Lights
Streamlight Protac Rail Mount 1
Streamlight 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)
Surefire DS
Surefire Z68
Unity Gascap USB-C

Compatible Remotes (with Surefire UE or DS tailcap)
Surefire ST07
Surefire SR07
Surefire SR-D-IT
Unity TAPS
Unity Hot Button
Unity Axon (Surefire plug)
Unity Axon SL (Surefire plug)
Modlite Modbutton
Modlite Modbutton Lite (Surefire plug)

Compatible Remotes (with Unity Gascap USB-C Tailcap):
Unity Axon USB-C
Unity Axon SL USB-C
Modbutton Lite USB-C