NcStar A2-Style Detachable Rear Sight for AR-15 - Aluminum Matte Finish

The NcStar A2-Style Detachable Rear Sight for AR-15 is a straightforward backup iron sight built for shooters who want a reliable, no-fuss aiming solution that doesn't compromise your rifle's modularity. If you're running an AR-15 and need a rear sight that can stand alone or work alongside optics, this aluminum matte-finish option gives you a proven profile—the classic A2 aperture design—without the permanent mounting commitment of fixed sights.

A2-style rear sights have proven themselves across millions of AR builds for a reason: the dual-aperture setup lets you dial between a smaller opening for precision shots and a larger one for rapid fire or lower-light conditions. The detachable mounting means you can remove it when you're running a quality optic, then reinstall it in seconds if your primary sight fails or you need iron backup. The matte aluminum finish resists glare and holds up to the wear that comes with field use.

Built as a drop-in for standard AR-15 platforms, this sight integrates with your existing rail without special tools or gunsmithing. It's a pragmatic choice for hunters, 3-gun competitors, home-defense builders, and anyone who refuses to bet their accuracy on batteries alone. Whether you're setting up a new rifle or rounding out your backup system on a precision build, the NcStar A2 rear sight delivers function without frills.

Key Features

• A2-style dual-aperture design for precision aiming or rapid engagement
• Detachable mounting—remove for optics-only setups, reinstall as backup in seconds
• Aluminum construction with matte finish to reduce glare
• Designed for standard AR-15 platforms
• Proven sight picture familiar to AR shooters

Specifications

Frequently Asked Questions

Will this rear sight work with my AR-15?

Yes, this is designed for standard AR-15 platforms with compatible rear sight mounting points. It's a drop-in solution that doesn't require modifications to your rifle.

Can I use this sight with a scope or red dot already mounted on my rifle?

Yes. The detachable design lets you remove it when running a primary optic, then quickly remount it if you need an iron backup or your optic fails.

What's the difference between the two aperture settings?

A2-style dual apertures give you a smaller opening for more precise, longer-range shooting and a larger opening for faster target acquisition in close quarters or low light.

What finish does this sight have?

The aluminum body has a matte finish, which reduces glare and offers a durable, low-reflective surface for field use.