Description Increase detection range without replacing your current riflescope by pairing it with the Firefield Night Vision Rifle Scope Magnification Doubler, and extend magnification up to 1.7 times. The Firefield NVRS Magnification Doubler can help increase your shooting accuracy, is easy to attach and compatible with any 50mm night vision riflescopes. Constructed of a titanium alloy, it is a lightweight, durable piece, and a perfect piece to add to any gear collection. Included in Package User manual Cleaning cloth Features Compatible with NVRS 50mm riflescopes Increases magnification 1.7 times Increases range of detection Easy and quick to attach Lightweight and durable EXPORT CONTROL NOTICE: This product is controlled for export and in-country transfer under the Export Administration Regulations (EAR). division contrary to U.S. law prohibited. Specifications Magnification 1.7 Diameter, Lens, mm 50 Relative aperture, D/f&'; 1:1.7 Field of view, m@100m 15 Distance, Minimum Focusing Distance 7 Material, Lens Glass Body Material Titanium Alloy Operating Temperature -22 to 104 Level of Protection (acc. to IEC 60529) IPX5 Nitrogen Purged No Waterproofness No Length 76 Width 63 Height 63 Weight 6.3kg Warranty Period 3yr