Luth-AR AR-15 A2 Rear Sight Assembly - UR-21K

Elevate your AR-15 with the precision and authenticity of the Luth-AR AR-15 A2 Rear Sight Assembly. Designed for enthusiasts building retro-style rifles or seeking reliable iron sights, this complete kit provides mil-spec performance in a durable, all-steel package. Whether you’re completing a classic A2 upper or adding backup sighting options, this assembly ensures accurate adjustments for windage and elevation, helping you zero in on targets with confidence.

Key Features

• All-Steel Construction: Built from high-quality steel with a matte black finish for corrosion resistance and long-lasting durability in demanding conditions.
• Adjustable Design: Features windage and elevation knobs for fine-tuned sighting, allowing quick adaptations to various shooting scenarios and ranges.
• Dual Aperture System: Includes standard and smaller apertures for versatile use—ideal for both close-quarters and long-distance precision shooting.
• Complete Kit: Comes with all necessary components for assembly, including the rear base lug, sight aperture, detent spring, elevator, pin, spring, windage knob, ball bearings, and screws—everything you need for a professional installation.

Specifications

• Weight: 4.8 oz—lightweight yet robust for minimal impact on rifle balance.
• Dimensions: Compact design measuring approximately 5″ in length, 2″ in width, and 2″ in height for seamless integration.
• Material: Steel with matte black finish.
• Compatibility: Specifically engineered for A2-style AR-15 upper receivers.
• Made in USA: Ensures adherence to strict quality standards.

Why Choose the Luth-AR A2 Rear Sight Assembly?

For shooters frustrated with flimsy aftermarket sights that wobble or fail under recoil, this assembly offers a rock-solid solution. It addresses common pain points like imprecise adjustments and poor build quality by providing a factory-like fit that enhances overall rifle accuracy. Perfect for retro AR-15 builds, training drills without optics, or as a reliable backup to modern red dots. Its straightforward assembly—though it requires care with small parts like ball bearings—empowers DIY builders to achieve professional results without specialized tools.

Transform your AR-15 into a precision instrument today. Add the Luth-AR AR-15 A2 Rear Sight Assembly to your build and experience the difference in sighting reliability and shooting confidence.

Frequently Asked Questions

What components are included in this rear sight kit?

This complete kit includes the A2 rear base lug, sight aperture, base, detent spring, elevator, pin, flat spring, windage knob, two ball bearings, and two base screws—providing everything needed for assembly on an A2 upper receiver.

Is assembly required, and how difficult is it?

Yes, this kit requires assembly using basic tools like punches and a screwdriver. It’s straightforward for those familiar with AR-15 builds, but take care with tiny parts like the ball bearings to avoid loss during installation.

Will this fit my modern flat-top AR-15 upper?

This sight assembly is designed specifically for A2-style upper receivers with the carry handle. It is not compatible with flat-top uppers without modification; for those, consider a detachable carry handle option.