This is Photo a akihabara 3rd shop

Fenix ALG-01 フラッシュライトマウンタ



Fenix ALG01 LED Flashlight Tactical Ring Mount
フラッシュライト タクティカル リング マウント
Weight: 51 grams (excluding allen wrench)
Material: Flashlight Ring Aluminum, type 6063TS. Plastic SpacerPOM
Hex Screw: Steel, type 22
Allen Wrench: Steel, type 45
Precision Machined Aluminum with Anodized Black Matte Finish
Mounting Base Designed with Locking Hex Screws to Fit on Picatinny/Weaver Rail
Clever Adjustable Diameter Designed to Allow for Use with a Wide Range of Flashlights
Universal Slide-on Flashlight Ring
  • モデル: 314000238000