Shown here is an example of a large objective lens riflescope (Vortex Razor HD Gen II 4.5-27x56) mounted on both the Scope Setter 8 (top image) and the Scope Setter 6 (bottom image). This optic features a 56mm objective lens, and a 34mm main tube size. As shown, this optic and/or similarly sized scopes when being used with low/ultra-low scope rings will be best suited with the shorter Scope Setter 6, to allow for adequate clearances.