Sun Optics USA Elec Tac Sight Micro Circ Dot Ret Rd/Grn 1X Magnification, Super Compact Design For Easy Mounting In Tight Spots Precision Ground, Fully Multi-Coated Lenses And Extended Polishing Process For Crisp Clarity Ground Double Lens System Protects Internal Lens 5-Stage IR Red/Green Reticle. Integral Mounting System Unlimited Eye Relief, Circle Dot Reticle