Bases and Mounts For Specific Rifle Models Home / Scope Mount Rings / Rail Risers, Adapters, Bases & Barrel Adapters / Bases and Mounts For Specific Rifle Models / Weaver 2pc Base Rail Scope Mount Adapter for Ruger American Rimfire - 48012 Weaver 2pc Base Rail Scope Mount Adapter for Ruger American Rimfire - 48012 Weaver 2pc Base Rail Scope Mount Adapter for Ruger American Rimfire - 48012 £19.95 £16.63 (ex. VAT) Stock Status: In Stock Also suits Marlin 980 & various Remington, Stevens, Winchester & Mossberg You Will Earn 19 points with this purchase Add to your Wish List Make 6 weekly payments of £3.33.Interest free. Learn More Information Specifications Reviews Ruger Weaver Top Base Rail Scope Mount Adapter for Ruger American Rimfire - 87502 2 piece base rail adapter set from Weaver (USA) for Ruger American Rimfire rifles that allows for the mounting of weaver 20mm width scope mount rings and telescopic scopes, reflex sights, lasers, torches etc. Simple and fast to fit - 4 screws included 1 slot on each base Please note that the slots on this base are weaver standard and NOT picatinny. We measure the slot widths at just under 5mm (weaver) whereas Picatinny are just over 5mm (5.23mm) As such Picatinny mounts with a full picatinny width lock bar underneath may not fit this base. See https://en.wikipedia.org/wiki/Weaver_rail_mount for more info on this. In addiiton to the Ruger American Rimfire these bases also suit - As front base on: Marlin 980 Remington 514*, 550 Stevens 57, 76, 417 1/2, 762 Winchester 74 As Rear base on: Marlin 80, 81, 980 Mossberg - 25, 26, 42, 45, 46A, 46B 46 with 13/16" dia Bbls, 46M, 140, 142, 146 Late model 45 and 46 with 3/4" dia. Bbls Remington 514*, 550 Winchester 47, 57, 69, 69A, 72, 74 *Remington 514 - drilling and tapping may be required MPN: 87502 Brand: Weaver Product Code: NW1109 Weight: 0.08kg Not yet reviewed Write an online review and share your thoughts with other shoppers! Be the first to review this product