Samson's True Back Up Rear Sights.
Since these backup sights were never meant to be the primary aiming system, they did away with the dual apertures and went with a single .160 aperture which is small enough for accurate shooting yet large enough to still be of use in low-light environments. Sights lock in both the folded and deployed positions. The durable construction and solid mounting system guarantees you'll stay on-zero.
Features:
- .160 aperture
- Material: 6061-T6 aluminum
- Finish: Type III class 2 hard coat anodizing
- Attaches to any 1913 Picatinny rail
- Perfect (M4) co-witness height
- Stainless steel clamp
- Just over 0.5 MOA per click windage adjustment
- Precision laser engraving
- Made in New Hampshire USA