{"product_id":"magpul-mbus-3-sight-rear-mag1167","title":"Magpul MBUS 3 Sight Rear for AR-15\/M4","description":"\u003cp\u003eThe Magpul MBUS 3 Rear is a polymer dual-aperture flip-up backup iron sight for AR-15 and M4 rifles, clamping to any 1913 Picatinny top rail.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDual apertures, constant-tension deployment and tool-less windage — the MBUS 3 Rear is the smartest polymer backup sight made.\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Magpul MBUS 3 Rear Sight (MAG1167) pairs the classic dual-aperture combat configuration — a large ring for speed, a small aperture for precision — with third-generation refinements throughout. The strengthened housing resists crush and impact, the slimmed profile stays out of the way of optics and hands, and the constant-tension spring snaps the sight up crisply from either side of the rifle.\u003c\/p\u003e\u003cp\u003eWindage adjusts without tools via positive, tactile clicks, so zeroing a set of MBUS 3s takes minutes rather than a session. For optics-driven rifles that still deserve dependable irons — which is to say, all of them — the MBUS 3 remains the definitive value in backup sights.\u003c\/p\u003e\u003ch3\u003eWhy shooters choose the MBUS 3 Rear\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-aperture design\u003c\/strong\u003e — fast ring up close, fine aperture at distance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstant-tension deployment\u003c\/strong\u003e — positive and ambidextrous\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool-less windage clicks\u003c\/strong\u003e — zero with your fingertips\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrengthened, slimmed GEN3 housing\u003c\/strong\u003e — tougher and lower-profile\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree finishes\u003c\/strong\u003e — Black, Flat Dark Earth, Olive Drab Green\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhat the MBUS 3 Rear fits\u003c\/h3\u003e\u003cp\u003eFits 1913 Picatinny top rails on AR-15\/M4 pattern rifles, mounted at the rear of the receiver rail. You need clear rail behind your optic, so check the space your mount leaves. Pair it with the MBUS 3 Front (MAG1166) for a complete matched backup system, and zero the pair together.\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\u003eDual-aperture flip-up rear sight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eReinforced polymer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFinish\u003c\/th\u003e\n\u003ctd\u003eBlack, Flat Dark Earth, Olive Drab Green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMount interface\u003c\/th\u003e\n\u003ctd\u003e1913 Picatinny top rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAdjustment\u003c\/th\u003e\n\u003ctd\u003eTool-less windage\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\u003eMAG1167-BLK · MAG1167-FDE · MAG1167-ODG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003cp\u003eComplete your backup system. \u003cstrong\u003eOrder the MBUS 3 Rear today\u003c\/strong\u003e — imported from the USA with all duties paid by us and dispatched tracked from the UK in 7–10 business days, with nothing to pay on delivery.\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":60873786753358,"sku":"MAG1167-BLK","price":69.99,"currency_code":"GBP","in_stock":true},{"title":"Flat Dark Earth","offer_id":60873786786126,"sku":"MAG1167-FDE","price":69.99,"currency_code":"GBP","in_stock":true},{"title":"Olive Drab Green","offer_id":60873786818894,"sku":"MAG1167-ODG","price":69.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1081\/3223\/7646\/files\/magpul-mbus-3-sight-rear-mag1167-black.jpg?v=1789881026","url":"https:\/\/onyxarmaments.co.uk\/products\/magpul-mbus-3-sight-rear-mag1167","provider":"Onyx Armaments","version":"1.0","type":"link"}