{"product_id":"magpul-mbus-sight-rear-ar15-m4","title":"Magpul MBUS Sight Rear for AR-15\/M4","description":"\u003cp\u003eThe Magpul MBUS Rear is a folding polymer dual-aperture back-up iron sight for AR-15 and M4 rifles, clamping to any MIL-STD-1913 Picatinny rail.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eThe folding rear that completes the set — dual apertures, windage adjustment, and polymer toughness that outlasts hard use.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Magpul MBUS (Back-Up Sight, MAG248) rear folds flat to clear your optic and flips up instantly when you need irons. It gives you the familiar dual-aperture setup — a large aperture for close, fast work and a small aperture for precision — with tool-free windage adjustment via a positive-click knob. The impact-resistant polymer body sheds knocks and weight in equal measure.\u003c\/p\u003e\u003cp\u003eRun it with the MBUS front for a complete, dependable backup iron sight system on any optic-equipped carbine.\u003c\/p\u003e\u003ch3\u003eWhy shooters choose the Magpul MBUS Rear\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual apertures\u003c\/strong\u003e — fast close-range and precise long-range settings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool-free windage\u003c\/strong\u003e — positive-click adjustment knob\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring-assisted deployment\u003c\/strong\u003e — flips up positively at a button push\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImpact-resistant polymer\u003c\/strong\u003e — tough, light, corrosion-proof\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour finishes\u003c\/strong\u003e — Black, Flat Dark Earth, Stealth Gray, Olive Drab Green\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat the Magpul MBUS Rear fits\u003c\/h3\u003e\u003cp\u003eClamps to any MIL-STD-1913 Picatinny rail on a flat-top AR-15\/M4 upper. You need clear rail behind your optic or mount, and the front and rear should sit on the same rail plane. Pair it with the \u003ca href=\"\/products\/magpul-mbus-sight-front-ar15-m4\"\u003eMBUS front (MAG247)\u003c\/a\u003e to complete the set, then zero windage on the rear and elevation on the front.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePlatform\u003c\/th\u003e\n\u003ctd\u003eAR-15 \/ M4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eFolding back-up rear sight (BUIS)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eImpact-resistant polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eBlack, Flat Dark Earth, Stealth Gray, Olive Drab Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMount interface\u003c\/th\u003e\n\u003ctd\u003ePicatinny \/ MIL-STD-1913\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustment\u003c\/th\u003e\n\u003ctd\u003eWindage (tool-free), dual aperture\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eMagpul Industries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMPN\u003c\/th\u003e\n\u003ctd\u003eMAG248-BLK · MAG248-FDE · MAG248-GRY · MAG248-ODG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eComplete the backup sight set. \u003cstrong\u003eOrder the MBUS Rear Sight today\u003c\/strong\u003e — in stock at Xtreme Tactical Gun Parts with free tracked UK delivery in 7–10 days.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eExplore more:\u003c\/strong\u003e \u003ca href=\"\/collections\/iron-sights-backup-sights\"\u003eIron Sights \u0026amp; Backup Sights\u003c\/a\u003e, \u003ca href=\"\/collections\/ar-15-parts-accessories\"\u003eAR-15 Parts\u003c\/a\u003e or browse all \u003ca href=\"\/collections\/magpul-industries\"\u003eMagpul\u003c\/a\u003e.\u003c\/p\u003e","brand":"Magpul Industries","offers":[{"title":"Black","offer_id":42811379679312,"sku":"MAG248-BLK","price":54.99,"currency_code":"GBP","in_stock":true},{"title":"Flat Dark Earth","offer_id":42811379712080,"sku":"MAG248-FDE","price":54.99,"currency_code":"GBP","in_stock":true},{"title":"Stealth Gray","offer_id":42811379744848,"sku":"MAG248-GRY","price":54.99,"currency_code":"GBP","in_stock":true},{"title":"Olive Drab Green","offer_id":42811379777616,"sku":"MAG248-ODG","price":54.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0550\/4978\/1328\/files\/magpul-mbus-sight-rear-ar15-m4-black.jpg?v=1786483773","url":"https:\/\/xtremetacticalgunparts.co.uk\/products\/magpul-mbus-sight-rear-ar15-m4","provider":"Xtreme Tactical Gun Parts","version":"1.0","type":"link"}