Shield Sights Compact Reflex Mini Red Dot Sight 8 MOA Dot Reticle RMSC-4MOA Glass Lens FDE. Its stunning low-profile design makes it an ideal optic for any custom pistol build. When coupled with our matching low-profile Glock MOS plate the RMS sits so low that the sight will co-witness without the need for suppressor sights. The RMSc is the ORIGINAL compact mini sight for slimline pistols. It is so popular that gun companies have built guns around it. The latest addition to the arsenal is the Glock 43x and G48. It features an all-new scratch-resistant ultra-clear glass lens and upgraded electronics with improved battery contacts all while maintaining the same frame and low profile that allows you to co-witness with standard iron sights. Specifications for Shield Sights RMSc Compact 1x21.85mm Reflex Mini Red Dot Sight: Manufacturer: Shield Sights Fabric/Material: Areospace Grade Aluminum Magnification: 1 x Objective Lens Diameter: 21.85 mm Reticle: 8 MOA Dot Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Emitter Type: Open Battery Type: Lithium Metal CR2032 Weight: 0.61 oz Red Dot Sights-Footprint: RMSc Features of Shield Sights RMSc Compact 1x21.85mm Reflex Mini Red Dot Sight Mounts to SHIELDs famous footprint. Utilizes SHIELDs patented mechanism enabling co-witnessing with standard iron sights considerably reducing training times and costs. The mechanism uses no click adjustment making it infinitely more accurate when zeroing. D-shaped crystal-clear lens with no filters to disturb the image of the world through the sight. Machined from aerospace-grade aluminium to extremely precise tolerances while maintaining an attractive modern-looking optic. Auto brightness adjustment so it can always be on and ready. Package Contents: Shield Sights RMSc Compact 1x21.85mm Reflex Mini Red Dot Sight Shield Sights RMSC-8MOA-GLASS-FDE: Compact Reflex Mini Red Dot Sight 8 MOA Dot Reticle RMSC-4MOA Glass Lens FDE