This is the SureFire Protective Rear Cap Assembly. 

Durability meets functionality with this high-quality rear cap assembly from SureFire!

Constructed from aerospace aluminum and featuring a raised guard around the button, you’ll never have to worry about its toughness or unintentionally activating the light.

With the ability to fit Scout Light weapon lights and flashlights that have a 3/4-inch diameter switch, you can use this assembly on a wide selection of lights!

Upgrade your SureFire light today and throw one of these rear cap assemblies in your cart!