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Swarovski BTX + 95mm Objective Module with Optional 1.7x Extender - Optics from Grahams of Inverness UK
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Amazon.com : Swarovski Optik ME 1.7X Magnification Extender for ATX/STX/BTX Spotting Scopes, Black : Sports & Outdoors
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Amazon.com : Swarovski Optik ME 1.7X Magnification Extender for ATX/STX/BTX Spotting Scopes, Black : Sports & Outdoors
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