The Magpul MBUS 3 Rear Flip-Up Sight is a premium product that delivers exceptional performance with a sleek compact design.Redefined and fine-tuned from the original MBUS the MBUS 3 sits at a diminutive 0.55" high when folded and 1.38" at its widest point ensuring it won't encumber your firearm. Despite the featherlight weight of 30 grams including hardware this sight is anything but fragile.Constructed from impact-resistant polymer it demonstrates Magpul's commitment to lightweight yet robust design.Compact size - sits 0.55" high when foldedFeatherlight - weighs only 30 gramsConstructed from impact-resistant polymerFeaturing the well-known spring-loaded technology present in its predecessor the MBUS 3 Rear Sight continues to excel in user-friendly operation with an ambidextrous push-button deployment catering to left and right-handed users alike.More than just a sight the MBUS 3 includes a rapid-select aperture system for swift adjustments in changing conditions providing you with the upper hand in any scenario.The sight sits at a standard AR-height when deployed adding a seamless addition to your firearm.With two different settings it offers 0.5 MOA (0.606"/100m) per click with a 14.5" sight radius and 0.4 MOA (0.439"/100m) per click with a 20" sight radius.Order your rear flip-up sight online today!Score big savings and fast shipping when you shop our large selection of cheap bulk .223/5.56 ammo for sale.Looking for more AR-15 magazines? Get big savings when on our entire online inventory of low-priced AR15 Mags for sale