This Hi‑Viz ARN21 folding back‑up sight set provides front and rear iron sight capability for AR platforms. The front sight uses a vertical tritium post for low‑light visibility while the rear is a dual‑aperture design with elevation and windage adjustments. The set is made to fit on 1913 Picatinny rails and is intended as a folding backup sighting solution for AR‑style rifles.
Key Specifications
- Fits 1913 Picatinny rails for standard accessory mounting.
- Front sight features a vertical tritium front sight post for low‑light aiming reference.
- Rear sight is a dual-aperture rear sight to support multiple sighting options.
- Rear sight provides elevation and windage adjustments for zeroing.
- Color is listed as RED/GREEN to denote sight post/indicator color options.
- Product dimensions are listed as 1.35 X 3.85 X 6.60.
- Height is given as 1.3500 in the provided specifications.
- Width is given as 3.8500 in the provided specifications.
- Length is given as 6.6000 in the provided specifications.
- Marked as compatible with the AR platform and specifically fit for AR-15 applications.
The ARN21 folding sight set delivers a compact, deployable iron‑sight option that complements modern AR configurations. With a tritium front post and an adjustable dual‑aperture rear, it serves as a reliable backup sighting system for a range of shooting contexts where durable, low‑light capable iron sights are required.
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