Sight Scope Installation Tools. This video is part 1 of 3 of the entire process for installing a PU scope on my Mosin Nagant 9130. In this part I drill and tap the receiver. WARNING. L. E. R. Long Eye Relief Scope Mounts For Vintage Military Rifles A Study in Concept, Design and Manufacture. June 6, 2013 Building a better mousetrap the Gewehr. Part of the attraction of the cold war Mosin Nagants is that they are excellent rifles for the typical 70100 street price, but the even bigger draw is that the. Mosin Nagant 10 Round Magazine Extension. A Detachable device that allows you to load 10 rounds of ammunition into your Mosin Nagant without making any permanent. All units are for Ruger 1022 with 18. 5 barrels standard or bull. Brownells is your source for Sight Scope Installation Tools,Gunsmith Tools Supplies at Brownells parts and accessories. Shop our vast selection and save Find great deals on eBay for Mosin Nagant Scope Mount in Hunting Scope Mounts and Accessories. Shop with confidence. This video is part 2 of 3 of the entire process for installing a PU scope on my Mosin Nagant 9130. In this part I install the base and cut the locking.