PRODUCT FEATURES A Extreme Compact Size: Only 68mm (2.7") Length, Combining Solid and Lightweight Build A Precise Aiming Control: 3 MOA Dot with Audible 1 MOA Click Value for Effortless Adjustments A Lower 1/3 Co-Witness: 41mm (1.6") Height from Base to Red Dot Center for Seamless Alignment A Rugged Durability: Rubber-Armored FDE Finish Ensures a Scratch-Free and Robust Surface A Clear & Reliable Shooting: Unlimited Eye Relief, Parallax Less Than 3 MOA at 50 Yards A Quick Release Picatinny Mount: Enables Fast Attachment and Removal with Maximum Versatility SPECIFICATIONS A RD-61 A Magnification: 1x A Objective Lens: 20mm A Eye Relief: Free A Optics Coating: Multi coated A Overall Length: 68mm / 2.7in A Quick Release Base Length: 45mm / 1.8in A Low Mount Length: 46mm / 1.8in A Sight Width: 42mm / 1.6in A Height (with Quick Release Riser Mount): 41mm, 1.6in from bottom to the sight center A Weight (net): 140g / 4.9oz A Click Value: 1MOA A Parallax: