{"product_id":"magpul-mbus-flip-up-backup-rear-sight-black-durable-backup-sight","title":"Magpul MBUS Flip-Up Backup Rear Sight, Black - Durable Backup Sight","description":"\u003cp\u003eOur review of the Magpul MBUS Flip-Up Backup Rear Sight concludes it is a practical, no-nonsense choice for shooters who need a lightweight, rugged backup iron sight that stays out of the way until needed. Built from impact resistant polymer and designed to clamp to most Picatinny rails, this rear sight is ideal for users who prioritize durability and simple, repeatable function. The single biggest reason to buy is its reliable spring-loaded flip mechanism with positive detents that keeps the sight erect during use yet allows it to fold flat under impact.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact resistant polymer construction:\u003c\/strong\u003e provides a low weight option that resists operational abuse in field conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-loaded flip up action:\u003c\/strong\u003e can be deployed quickly from either side or by pressing the top for fast transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetent and spring pressure:\u003c\/strong\u003e keeps the sight firmly erect during use while allowing unobstructed folding when struck.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePicatinny clamp compatibility:\u003c\/strong\u003e mounts to most Picatinny rails and aligns to the same height as standard iron sights for co-witnessing with many optics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective wings and included tool:\u003c\/strong\u003e shield the spring-locking sight post and the elevation adjustment tool is included for on-rail zeroing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe Magpul MBUS rear sight suits sport shooters, airsoft enthusiasts, and firearm owners who want a dependable backup sighting option that is lightweight and easy to install. It is especially useful for users who run optics but want a low-profile iron sight that snaps up into a solid, repeatable position.\u003c\/p\u003e\u003cp\u003eThose who require metal sights for traditionalist reasons or who need integrated front and rear matched sets for precision competition may prefer alternative iron sight systems; however, for durability, repeatable function, and value, this sight covers the needs of most tactical and recreational users.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eReliable, positive flip-up action that is easy to operate from either side.\u003c\/li\u003e\n\u003cli\u003eLightweight, impact resistant polymer construction that stands up to rough handling.\u003c\/li\u003e\n\u003cli\u003eSecure Picatinny mounting and matching sight height for co-witnessing with optics.\u003c\/li\u003e\n\u003cli\u003eProtective wings and included elevation tool make field adjustments straightforward.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePolymer construction may be a limitation for users who prefer the perceived longevity or feel of all-metal sights.\u003c\/li\u003e\n\u003cli\u003eRear-only product; front sight must be acquired separately for a complete iron sight set.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMagpul\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eMBUS Flip-Up Rear Sight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eColor\u003c\/td\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eImpact resistant polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003ePicatinny rail clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeatures\u003c\/td\u003e\n\u003ctd\u003eSpring-loaded flip, detent locking, protective wings, elevation adjustment tool included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe Magpul MBUS Flip-Up Rear Sight is a sensible purchase for anyone who wants a durable, lightweight backup sight that snaps reliably into place and folds cleanly under impact. It delivers strong value through robust construction, easy installation, and dependable function, making it a recommended backup sight for most tactical, sport, and airsoft applications.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eDoes this sight fit standard Picatinny rails?\u003c\/strong\u003e\u003cbr\u003eYes, it clamps to most Picatinny rails and is made to match standard iron sight height for co-witnessing.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs an adjustment tool included?\u003c\/strong\u003e\u003cbr\u003eYes, an elevation adjustment tool is included, though many aftermarket sight tools will also work.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow does the flip mechanism behave under impact?\u003c\/strong\u003e\u003cbr\u003eThe detent and spring pressure keep the sight erect during use but allow it to fold unobstructed if struck, protecting the sight post.\u003c\/p\u003e","brand":"Magpul","offers":[{"title":"Default Title","offer_id":48252351348955,"sku":"B004TBMUMM","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61eK4XHyPpL._AC_SL1500.jpg?v=1778237823","url":"https:\/\/gearmusthave.com\/products\/magpul-mbus-flip-up-backup-rear-sight-black-durable-backup-sight","provider":"GearMustHave","version":"1.0","type":"link"}