Feyachi S27 Flip-Up Iron Sights Backup Set — Picatinny/Weaver, Red & Green Dot, Black

Feyachi S27 flip-up front and rear iron sights are a lightweight, aluminum Picatinny/Weaver backup sight set with integrated red and green aiming dots for fast target acquisition.

The Feyachi S27 Backup Sight Set provides a compact, zero-profile solution for shooters who want dependable backup iron sights with a quick-deploy flip-up design and selectable red/green dots. Built from aluminum and finished in black, these sights are engineered to fit standard Picatinny and Weaver rails—ideal as primary or secondary aiming aids for rifles and some handguns. At roughly 109 grams total, they add minimal weight while delivering durable performance in sport, hunting, and tactical applications.

How do the S27 flip-up sights mount to my rail?

The S27 set clamps to Picatinny and Weaver rails using a built-in mounting interface that secures with an adjustable screw. Installation is tool-assisted but straightforward, and the sights index on the rail to preserve alignment.

• Compatible with standard Picatinny and Weaver rail profiles
• Tool-fit screw clamp for a tight, repeatable mount
• Indexes on rail to maintain zero when reinstalled
• Low-profile when folded to reduce snagging

What aiming options and visibility features are included?

The S27 pair includes both front and rear flip-up irons with built-in red and green dot reticles for faster target pickup in varied light. The dots give a bright aiming reference, while the iron silhouettes remain usable if optics fail or batteries run out.

• Selectable red and green dot options for contrast in different lighting
• Iron-sight geometry keeps co-witnessing with optics possible
• Flip-up design allows rapid deployment and safe stowage
• No dependence on night-vision systems — straightforward visible dots

How durable and lightweight are these sights for field use?

Manufactured from aluminum with a matte black finish, the S27s are built to resist everyday wear while keeping overall system weight low at about 109 grams. The flip mechanisms are designed for repeated operation in routine shooting scenarios.

• Aircraft-grade aluminum construction for balance of strength and weight
• Matte black finish reduces glare and improves concealment
• Robust flip-up springs and detents for reliable deployment
• Compact folded profile minimizes exposure and snag risk

Can I use these on a handgun or only on rifles?

The S27 sights are marketed as compatible with handguns that accept Picatinny or Weaver attachments and with most rifles featuring those rails. Verify your platform’s rail dimensions before purchase to ensure a proper fit.

• Compatible devices listed include handguns and long guns with appropriate rail
• Ideal as backup or co-witness sights behind optics
• Minimal added mass keeps balance on lightweight platforms
• Not dependent on magnification (1x minimum) — straightforward iron use

Who is this for: The Feyachi S27 Flip-Up Front and Rear Iron Sight Set is best for shooters who want a reliable, quick-deploy backup sighting solution that won’t add much weight or bulk. It suits sport shooters, hunters, and tactical users who mount optics but want an immediate fallback option. If you need a compact, aluminum Picatinny/Weaver-compatible backup sight with visible red and green dots and a low folded profile, the S27 is designed to meet those needs without complicated setup or heavy hardware.