{"product_id":"magpul-mbus-flip-up-backup-rear-sight-durable-low-profile","title":"Magpul MBUS Flip-Up Backup Rear Sight - Durable, Low-Profile","description":"\u003cp\u003eIn this review the Magpul MBUS Flip-Up Backup Rear Sight is examined for shooters who need a reliable, lightweight iron sight as a backup to optics. The bottom line: this rear sight is for those who prioritize \u003cstrong\u003edurability\u003c\/strong\u003e and consistent, repeatable performance from a polymer flip-up unit that clamps solidly to MIL-STD-1913 Picatinny rails. It stands out because the spring-loaded, detent-locked design provides positive snapability into both up and folded positions while remaining unobtrusive when stowed.\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 lightweight sight that resists operational abuse and keeps overall weight down on the rifle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-loaded flip-up action:\u003c\/strong\u003e The sight is easily deployed from either side or by pressing the top for fast transition from stowed to ready.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDetent and spring pressure:\u003c\/strong\u003e Keeps the sight erect for consistent sight picture yet allows it to fold unobstructed under impact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePicatinny\/STANAG 4694 clamp:\u003c\/strong\u003e Attaches to most MIL-STD-1913 rails and matches the height-over-bore of standard A2 irons ensuring co-witness with A2 setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective wings:\u003c\/strong\u003e Shield the spring-locking A2 front sight post area for added damage resistance in the field.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes elevation tool:\u003c\/strong\u003e An elevation adjustment tool is included and most aftermarket A2 adjustment tools are compatible for fine tuning.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThe Magpul MBUS rear sight is aimed at practical shooters, entry-level competitors, and service rifle users who want a reliable backup that does not add significant weight or profile to the firearm. It is a solid choice for anyone who needs a rear iron that deploys quickly and locks positively into place for immediate use.\u003c\/p\u003e\u003cp\u003eThose seeking precision, adjustable aperture sights for long-range match shooting, or metal sights intended for heavy duty professional use may prefer higher-end metal backups or dedicated target rear sights. This is primarily a rugged, polymer backup sight rather than a specialized competition optic.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLightweight, impact resistant polymer construction that handles rough use without adding bulk.\u003c\/li\u003e\n\u003cli\u003eSpring-loaded, ambidextrous flip-up action with positive detent snap for dependable deployment.\u003c\/li\u003e\n\u003cli\u003eSecure Picatinny\/STANAG clamp and A2 height-over-bore compatibility for predictable co-witnessing with A2 front sights.\u003c\/li\u003e\n\u003cli\u003eDurable protective wings and included elevation tool make setup and field service simple.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePolymer construction, while durable, is not the same as steel for users who require a full-metal sight for extreme duty scenarios.\u003c\/li\u003e\n\u003cli\u003eLimited to rear sight role; those wanting a matched front and rear set must purchase front sight separately if not already equipped.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\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\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eImpact resistant polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Type\u003c\/td\u003e\n\u003ctd\u003eMIL-STD-1913 Picatinny \/ STANAG 4694 clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Over Bore\u003c\/td\u003e\n\u003ctd\u003eSame as standard A2 irons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustment\u003c\/td\u003e\n\u003ctd\u003eElevation adjustment tool included; compatible with A2 tools\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 dependable, value-oriented backup sight that delivers durable performance and quick, positive deployment for most shooters. It is a smart buy for anyone who wants a lightweight, ambidextrous rear sight that pairs well with A2 front sights and holds up under field use.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this sight fit my Picatinny rail?\u003c\/strong\u003e\u003cbr\u003eYes, it clamps to MIL-STD-1913 Picatinny and STANAG 4694 rails and secures with a robust mounting interface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it come with an adjustment tool?\u003c\/strong\u003e\u003cbr\u003eYes, an elevation adjustment tool is included and most aftermarket A2 front sight tools will also work.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the sight durable enough for hard use?\u003c\/strong\u003e\u003cbr\u003eCustomers report strong durability and the impact resistant polymer with protective wings resists operational abuse well.\u003c\/p\u003e","brand":"Magpul","offers":[{"title":"Default Title","offer_id":48644722655451,"sku":"B004YKWAG4","price":39.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61Y8N1GKHtL._AC_SL1500.jpg?v=1778615819","url":"https:\/\/gearmusthave.com\/products\/magpul-mbus-flip-up-backup-rear-sight-durable-low-profile","provider":"GearMustHave","version":"1.0","type":"link"}