Product DescriptionSamson True Back Up Sights deliver dependable, folding front and rear iron sights for rifles equipped with 1913 Picatinny rails. Designed as robust back-up sights, the rear uses a single .160-inch aperture that balances precision with low-light usability. Both the front and rear sights lock positively in the folded and deployed positions, and the set accepts aftermarket front sight posts with MIL-SPEC dimensions. Precision-machined from 6061-T6 aluminum with a stainless steel clamp and finished in Type III Class 2 hard-coat anodizing, this sight set is built to stay on zero.Product Highlights Single .160-inch rear aperture for accurate aiming in varying light 6061-T6 aluminum construction with stainless steel clamp for durability Type III Class 2 hard-coat anodized finish resists wear and corrosion Top-mounted, foldable design attaches to any 1913 Picatinny rail M4 co-witness height; windage adjusts at just over 0.5 MOA per click Specs Product Type: Folding backup iron sight set (front and rear) Mount Type: 1913 Picatinny (top-mounted) Rear Aperture: .160 inch Front Sight: Accepts MIL-SPEC diameter sight posts; HK-style hood Material: 6061-T6 aluminum; stainless steel clamp Finish: Type III Class 2 hard-coat anodizing Height: M4 co-witness Windage Adjustment: Just over 0.5 MOA per click (rear) Color: Black Country of Manufacture: USA UPC: 850006871193 Manufacturer Part Number: 02-00059-01 Brand Name: Samson Manufacturing Corp. Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&&';;s manufacturer.