Product overview
About this product
Product description
The Strike Polymer Backup Sights (SPBUS) is a low-profile affordable sighting system that is designed for the AR platform and has bonus built-in sights when flipped down. No time to flip up the sights, you have backup sights on your backup sights. The SPBUS sights are made with lightweight and durable SI Polymer Extreme material with steel mounting tab and insert that can handle any wear and tear you throw at it without any major issues. As long as you've got a Picatinny rail, you will have these SPBUS mounted in minutes. Both sights are capable of flipping down nice and low so you don't have to worry about them being in your way when they're not in use or snag on any gear. The SPBUS does not have an internal spring so you don't accidently deploy the sights when you don't need them. Since the SPBUS sights are slightly taller than standard A2 sights (2.3mm/0.09" taller), the SPBUS is designed and optimized to have both sights paired together and not with other sights. To zero the sights or make any adjustments, the rear sight has an easy-to-use knob for adjusting windage while the front sight elevation is easily and quickly adjusted without tools. The rear SPBUS has dual apertures at 4.70mm(0.19") for longer eye relief, low light and faster target acquisition; and 1.75mm(0.07") for shorter eye relief and greater accuracy. Quickly slide the rear sight up and down to change to the aperture you need.
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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.
