NiteHog Viper 35 QR Adapter 58mm External Diameter at Objective Scopes Black. Precise positioning mechanism The adapter is developed for thermal imaging clip-ons VIPER 35 and VIPER 50 Next with an excessive alignment to your day optical sight. The mount enables: Instantaneous replacement of the thermal imaging attachment according to the field of view of the day scope allowing a quick and adequate reaction in any weather and atmospheric conditions. Robust operational dependability The mount ensures match with optical axes of a diverse range of day optical sights. Adaptable to a wide spectrum of rifles with picatinny rails Extended and rigorous utilization with hunting and defense weapons as assault rifle Specifications for NiteHog Viper QR Adapter: Manufacturer: NiteHog Color: Black Finish: Anodized Attachment Type: Quick Detach Fabric/Material: Aluminum Features of NiteHog Viper QR Adapter Quick Release Silent Mounting No Re-Zero Needed Package Contents: NiteHog Viper 35 QR Adapter Allen Keys NiteHog NH004/58: Viper 35 QR Adapter 58mm External Diameter at Objective Scopes Black