30-39mm

ZEISS 10×32 Victory SF Binoculars

Vortex Viper PST Gen II 2-10×32 Riflescope FFP EBR-4 MRAD Reticle PST-2105

Vortex Viper PST Gen II 2-10×32 Riflescope FFP EBR-4 MOA Matte Black PST-2101

Vortex Optics StrikeFire 2 Red/Green Dot With Cantilever Mount SF-RG-501

Vortex Strikefire II Bright Red Dot & VMX-3T Magnifier Bundle

Vortex StrikeFire II Red Dot scope SF-BR-504

Vortex Solo RT 8×36 Monocular

Vortex Solo 8X36 Monocular S836

Vortex Solo Monocular 10×36 S136

Vortex Recce Pro HD 8X32 Monocular

Vortex Raptor 8.5×32 Porro Prism Binocular R385

Vortex Raptor 10×32 Porro Prism Binocular