50-59mm

Vortex Diamondback HD 12×50 Binocular 

Vortex Diamondback HD 10×50 Binocular

Vortex Diamondback 3.5-10x50mm Riflescope

Vortex Crossfire II 3-9x50mm Scope

Vortex Crossfire HD 12X50 Binoculars

Vortex Crossfire HD 12-36×50 Spotting Scope – Angled

Vortex Crossfire HD 10×50 Binoculars

Vortex 18×56 Kaibab HD Binoculars

Trijicon Tenmile HX 5-25×50

Trijicon Tenmile 5-50×56

Trijicon Tenmile 5-25x50mm SFP Riflescope – MRAD Center Dot Reticle

Trijicon Tenmile 4-24×50