The Patented US Optics SN-9 design is a FFP high magnification riflescope with extensive elevation travel for ultra long distance precision shooting. This system uses external elevation and windage turrets that yield up to 235 total MOA travel(elevation only). The US Optics SN-9 retains perfect lens alignment throughout the elevation travel range, this allows for the best resolution over the entire adjustment range. Primarily used in 1700+ yard plus applications it has become a favorite in the .50BMG, .408 Chey Tac and .338 Lapua shooting community.