--- title: "Magpul MBUS Rear Sight Flip-Up Black" description: "Dual-aperture rear sight with windage adjustment for AR15/M16 platforms. Impact-resistant polymer body folds on a 1913 Picatinny rail and deploys by spring." canonical_url: "https://www.kygunco.com/product/magpul-mag248-blk-mbus-flip-up-rear-sight-ar15m4-black" meta: author: KYGUNCO "og:description": "Dual-aperture rear sight with windage adjustment for AR15/M16 platforms. Impact-resistant polymer body folds on a 1913 Picatinny rail and deploys by spring." "og:image": "https://cdn.kygunco.com/assets/products/65284/thumbnail.jpg?v=1713459155" "og:image:height": "500" "og:image:width": "500" "og:title": "Magpul MBUS Rear Sight Flip-Up Black" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Sights, Lasers & Lights](https://www.kygunco.com/category/shooting/gun-parts/sights-lasers-and-lights) / [Gun Sights](https://www.kygunco.com/category/shooting/gun-parts/sights-lasers-and-lights/gun-sights) / MGP-MAG248-BLK ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/65284/main.jpg?v=1713459155) For illustration purposes only, this image may not be an exact representation of the product. # MAGPUL MBUS Flip-Up Rear Sight AR15/M4 Black Flip-up rear sight for AR15/M16-style rifles with a dual-aperture design and windage adjustment. The Magpul MBUS uses impact-resistant polymer construction, spring-loaded deployment, and folds flat on a 1913 Picatinny rail while matching standard A2 iron sight height-over-bore. 5.0 ** ** ** ** ** [2 reviews](#reviews) $36.99 ** 4 interest-free payments of **$9.25** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 65284 Style MGP-MAG248-BLK UPC 873750004358 Condition New Manufacturer [Magpul](https://www.kygunco.com/brand/magpul) Weight 1 lb ### Magpul MBUS Flip-Up Rear Sight AR15/M4 - Black 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 AR15/M16 platform. Made in U.S.A. #### FEATURES - Impact resistant polymer construction provides light weight and resists operational abuse - Spring-loaded flip up sight easily activated from either side or by pressing the top - Detent and spring pressure keeps sight erect but allows for unobstructed folding under impact, etc. - Clamps to MIL-STD-1913 Picatinny/STANAG 4694 receiver rail and provides the same height-over-bore as standard A2 irons - Protective wings shield the dual, same plane flip apertures - Sight can still be folded with either large or small aperture in position - Detent knob easily and positively adjusts windage **SPECIFICATIONS** - Weight, w/ hardware: 1.3 oz. - Height above rail, stowed: \~0.51 in. - Center of aperture to top of rail: 1.42 in. - Length, stowed: 2.6 in. - Length, deployed: 1.5 in. - \~0.7 MOA (0.754"/100m) per click with a 14.5" sight radius - \~0.5 MOA (0.547"/100m) per click with a 20" sight radius ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 5.0 ** ** ** ** ** 2 reviews ** ** ** ** ** 2 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Reviews ** Jesus Las Vegas, NV Was on sale and couldn’t miss out on a good product. 1/7/2022 ** ** ** ** ** ** Stephen Glasgow, KY These back up sights are exactly what are needed for your AR. The small reticle flips down allowing for closer target acquisition. Flip it up cow longer distances. If you have a fixed front sight, this is the addition you need to hit those long range and close range targets. 5/6/2013 ** ** ** ** ** ## More from Magpul ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/magpul-mag248-blk-mbus-flip-up-rear-sight-ar15m4-black#webpage","@type":"WebPage","description":"Dual-aperture rear sight with windage adjustment for AR15/M16 platforms. 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