The MBUS (Magpul Back-Up Sight) is a low-cost, color injection molded, folding back-up sight. The dual aperture MBUS Rear Sight is adjustable for windage and fits most 1913 Picatinny rail equipped weapons, but is specifically tailored to the AR-15 / M16 platform.
Made in the USA.
Please Click Here to View our List of Restricted States, Cities, Counties, and Locations Prior to Ordering Ammo, Guns, & MagazinesFirearms (Rifles, Handguns, Shotguns and Receivers) and Ammunition cannot be shipped in the same package as per UPS, FEDEX and USPS. For accurate shipping charges please place one order for Firearms and another for the Ammunition separately. Orders placed for Firearms and Ammunition together will not reflect the current shipping charges, and will require additional shipping charges and a delay when the orders are shipped.