30-39mm

Sightmark Shade 256 3.5-28×30 Mini Thermal

Vortex Crossfire HD 2-7×32 Riflescope – Illuminated Dead-Hold 2A BDC

Nocpix Vista H35R Rangefinding Thermal Monocular

Nocpix SLIM L35 Multi-Function Thermal Optic

Nocpix LUMI L35 Compact Thermal Monocular

Leupold Freedom RDS Muzzleloader

AGM Adder V2 LRF 35-640 Thermal Imaging Riflescope

AGM Adder V2 35-384 Thermal Imaging Riflescope

ZEISS Victory V8 1.1-8x30mm Scope

ZEISS Terra ED 8×32 Binoculars – Gray

ZEISS Terra ED 8×32 Binoculars – Black

ZEISS Terra ED 10×32 Binoculars – Gray