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.

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

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 tailcaps to function, which is not included.

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