50-59mm

Tangent Theta 5-25×56 Professional Riflescope – Gen 3 XR Fine Reticle

Wave Infrared Tempest 650 LRF Thermal Imaging Scope

Nocpix Vista H50R Rangefinding Thermal Monocular

Nocpix ACE H50R Thermal Scope

AGM Spectrum LRF 4K Digital Day / Night Vision Riflescope

AGM ObservIR LRF 35-640 Thermal & Digital Day/Night Vision Binocular

AGM Adder V2 LRF 50-640 Thermal Imaging Riflescope

AGM Rattler V3 LRF 50-640 Thermal Imaging Riflescope

Leupold VX-6HD Gen 2 3-18×50 CDS-SZL2 Side Focus Riflescope – Illuminated FireDot Duplex

Leupold VX-6HD Gen 2 3-18×56 CDS-SZL2 Side Focus Riflescope – Illuminated FireDot Twilight Hunter

Leupold VX-6HD Gen 2 4-24×52 CDS-SZL2 Side Focus Riflescope – Illuminated TMOA

Leupold VX-6HD Gen 2 4-24×52 (34mm) CDS-SZL2 Side Focus Illum. FireDot Duplex