If you have a 70mm sunshade for a Big Nikko , gathering dust , send me a mail please .
Or just group order : MIZUGIWA 50mm objective Lens Scope Sunshade Aliexpress.com | Alibaba Group and get a stepping ring if neccessary.
Or: Rifle Scope Sun-Shades - Objective Extender Sunshade Shield | UK Freepost
The Big Lynx sunshade with a 62 - 67mm step up ring works perfectly on the MK3 Big Nikko. I had both scopes so I am 100% sure of this. You can buy the Big Lynx sunshade new directly from Lynx Optics in Bromhof Gauteng. I bought my step up ring on Bidorbuy.