Spike's Tactical Rear Folding Sight - Precision Backup Iron Sight for AR-15 & M4 Rifles

A solid backup iron sight needs to stay out of your way until it matters. The Spike's Tactical rear folding sight is built for AR-15 and M4 rifles that run optics as their primary system—it folds low when you don't need it, locks securely when you do. Constructed from 6061-T6 aluminum with Type 3 hard-coat anodizing and steel components finished for corrosion resistance, this sight is rugged enough for duty work, training, and serious hunting. At just 1.3 ounces, it won't slow you down or throw off your balance.

The folding rear sight design means you get a low profile when stowed, so your upper receiver stays clean and your optic takes priority. When you need iron backup—whether your scope fails in the field, you're running a shorter-range setup, or you're zeroing at the bench—a simple lever push deploys it and locks it in place. Windage adjustments happen tool-free, so you can tweak your point of aim without breaking out the multi-tool. The flipping diopter gives you options for different shooting distances and light conditions.

This is the kind of piece you install and then forget about until the moment you actually need a backup. That's exactly what a good iron sight should do.

Key Features

• Folding design with secure lock when raised
• Low-profile footprint when folded
• Tool-free windage adjustment for quick field tweaks
• Flipping diopter for distance and lighting flexibility
• 6061-T6 aluminum with Type 3 hard-coat anodize and corrosion-resistant steel components
• Lightweight at 1.3 ounces—minimal impact on rifle balance

Specifications

Frequently Asked Questions

Will this rear folding sight work on my AR-15 or M4?

Yes. The Spike's Tactical rear folding sight is designed for AR-15 and M4 platform rifles and installs on standard picatinny rail systems.

What happens when I fold the sight down?

When folded, the sight sits low and out of the way, keeping your upper receiver clean and clear for an optic-primary setup. Push the lever to lower it and fold it flat.

Can I adjust windage without tools?

Yes. The windage adjustment is tool-free, so you can make quick field corrections or range tweaks without breaking out extra gear.

How much weight does this add to my rifle?

At 1.3 ounces, the Spike's Tactical rear folding sight is light enough that it won't meaningfully affect your rifle's balance or handling.