GG&G Flashlight Mounting Ring for Surefire G2 & G3 Flashlights. The GG&G G2 Tactical Flashlight Mount provides a rugged dovetail mounting interface for the G2 and G3 Surefire flashlights which both have a main tube diameter between 1.015 and 1.030 inches. A 1" light ring is too small and a 30mm scope ring is too large but this GG&G Mount is just right GG&G Tactical has designed this ring mount to allow you to mount your flashlight directly to the dovetail on a weapons flashlight mount like the GG&G Offset Tactical Flashlight Mount. The body of the GG&G G2 Flashlight Mounting Ring is manufactured from 6061 T6 aluminum alloy and Type III hard coat anodized matte black per mil-spec. All steel components have a manganese phosphate matte black finish per mil-spec. At 1.3 ounces this flashlight mount provides a lightweight method of attaching a Surefire G2 or G3 Surefire nitrolon tactical flashlight to your firearm. Specifications for GG&G Flashlight Ring for Surefire G2: Material (body): 6061 T6 Aluminum Finish (body): Type III Hard-coat Anodized Matte Black Weight: 1.3 oz. Features of GG&G 1389: Mount a Surefire G2 or Surefire G3 to your firearm Custom-sized ring for the G2 / G3 - no spacers required Package Contents: GG&G Flashlight Mounting Ring for Surefire G2 & G3 Flashlights