Product overview
About this product
Product description
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. Spring-loaded flip up sight easily activated from either side or by pressing the top release. 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. 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. Cannot be mounted to a railed gas block due to excess heat issues. Front MBUS must be mounted to a railed fore end on the same plane as the receiver rail. Because of this the sight is also not compatible with MOE Hand Guards. Made in the USA.
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Frequently Asked Questions
Most orders are processed within 2–3 business days. Delivery time depends on the carrier, destination, and product availability. Tracking information will be emailed once your order ships. Express overnight shipping is not available.
Returns require prior authorization and an RMA number. You must request an RMA within 14 calendar days of delivery, and items must be unused, in new resalable condition, and returned with their original packaging and accessories. Non-defective returns are subject to a 20% restocking fee or $15 minimum, whichever is greater. Some items are final sale. Please review our full Refund & Return Policy for complete details before starting a return.
Warranty coverage is provided by the product manufacturer and varies by brand and product. If an item is defective on arrival, please contact us within 3 calendar days of delivery. After first use, warranty service and repairs are handled directly by the manufacturer according to their warranty terms.
Yes. ShopThermalOptics is an authorized retailer for the products we sell. We work through established manufacturers and distribution partners so customers can purchase with confidence.
We’re deeply grateful to the men and women who serve our country and our communities. Because we already price our products as low as possible, we’re unable to offer additional discounts, including military or first responder discounts. Thank you to all our troops and first responders for your service.
