Amazon.com: EMERSONGEAR MS2000 Military Airsoft Distress Marker。MS-2000 (M2) Strobe Marker Light - ACR Electronics, Inc。FMA Tactical Dummy Airsoft MS2000 Strobe Light Model Version No。FMA Tactical Airsoft MS2000 Working Distress Marker Functional。This is an authentic MS2000 Strobe light. The item has been used but remains in good shape. If you are sensitive to scratches from a used item do not bid. Can confirm that it powers on and works correctly.