Spike’s Tactical Folding Rear Sight | Picatinny Mount

The Spike’s Tactical Folding Rear Sight is a rugged backup iron sight that earns its place on any AR-platform rifle. Built for Picatinny rails, it folds down flat to stay out of your optic’s way, then snaps up instantly when you need irons. Electronics are wonderful right up until they are not, and this sight is your answer for that moment.

The Backup Your Optic Needs

Every serious AR build should answer one question honestly: what happens when the red dot dies? This folding rear sight from Spike’s Tactical answers it with a low-profile unit that lives flat on the rail until called upon.

Batteries die, emitters fail, and lenses fog at the worst moments, which is why backup irons remain standard on serious rifles decades into the optics era. They cost little, weigh less, and remove an entire failure mode from your setup. This rear unit pairs cleanly with a wide range of front sights, making it a great pick for a lower-third co-witness with a red dot or as half of a standalone iron setup. Home defenders, duty users, and weekend shooters all benefit from the same cheap insurance.

Spike’s Tactical Folding Rear Sight Features

The details that make it dependable:

• Folds down flat to stay completely out of your optic’s sight picture
• Snaps up instantly when you need iron sights
• Machined 6061-T6 aluminum body, strong yet lightweight
• Type III hard-coat anodized finish that resists scuffs and corrosion
• Protective coating on the internal steel parts for long-term reliability
• Pairs with a wide range of front sights for flexible setups

Build Specifications in Detail

The body is machined from 6061-T6 aluminum, giving the sight a strong yet lightweight platform that handles repeated deployment without complaint. A Type III hard-coat anodized finish seals the aluminum against scuffs, corrosion, and the daily abrasion of gear and gun cases.

Inside, the steel parts get a protective coating of their own, so the spring and lockup keep working through humidity, sweat, and neglect. Repeated deployment is the real test of a folding sight, and Spike’s Tactical Folding hardware is built for exactly that duty cycle. Mounting is standard Picatinny, dropping onto the rear of any flat-top upper receiver in seconds.

Setup, Co-Witness, and Care

Install the sight at the rear of your receiver rail, pair it with your front sight of choice, and zero the set. With a red dot in place, a lower-third co-witness keeps the irons visible but unobtrusive, ready the instant your electronics go dark. Confirm your iron zero with your carry ammunition and log it, because backup gear you have never verified is just decoration.

Fold it flat and forget it until practice day, then deploy it during dry-fire to keep the mechanism smooth. Practice the transition too: dot dies, thumb the sight up, keep shooting, because that rep is cheap and pays off under stress. A drop of lubricant on the pivot keeps the action crisp. Matching front sights and everything else for the top of your rifle live in our optics section.

When your electronics go dark, the Spike’s Tactical Folding rear sight keeps you in the fight, which is the entire job description of a backup iron. Bolt one on and stop worrying about batteries. Ships direct to your door, no FFL required.