Strike Industries Backup Sight Set - Front/Rear Flip-Up for Versatile Use - SI-SPBUS

Overview

The Strike Industries Polymer Backup Sight Set (SI-SPBUS) is a low-profile, folding iron sight system designed for the AR-15 platform. The sights are constructed from impact-resistant SI Polymer Extreme material, reinforced with steel mounting tabs and inserts. They mount directly to Picatinny rails and feature a non-spring-loaded design to prevent accidental deployment. The rear sight includes dual apertures—4.70mm for faster target acquisition and low light, and 1.75mm for increased accuracy. The front sight is elevation-adjustable without the need for tools, while the rear sight offers tool-less windage adjustment. When folded, the sights remain low-profile to reduce snagging. These sights are approximately 2.3mm taller than standard A2 sights and are optimized for use as a paired set.

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