LUTH-AR UR-21K A2 Rear Sight Assembly Kit 812058032250

The LUTH-AR UR-21K is a complete A2-style rear sight assembly kit designed for AR-15 and M4 platform rifles. This kit includes all the necessary components to install a traditional A2 rear sight on your upper receiver, providing shooters with the classic adjustable rear sight configuration used on military and service rifles. It is an excellent choice for custom builds, retro restorations, and upgrades where the reliable A2 sight system is preferred.

LUTH-AR specializes in manufacturing high-quality AR-15 components that meet the needs of both enthusiasts and professional builders. The UR-21K A2 Rear Sight Assembly Kit is precision machined to ensure proper fitment and smooth operation. This kit allows builders to achieve the authentic A2 look and functionality while using modern, well-made parts.

Key Features of the LUTH-AR UR-21K A2 Rear Sight Kit

• A2 Style Rear Sight – Classic adjustable rear sight configuration.
• Complete Assembly Kit – Includes all necessary components for installation.
• Precision Machined – Manufactured for accurate fit and reliable function.
• AR-15 Compatible – Fits standard AR-15 and M4 upper receivers.
• Model UR-21K – Official LUTH-AR A2 rear sight assembly kit.

The LUTH-AR UR-21K A2 Rear Sight Assembly Kit provides everything needed to install a traditional A2 rear sight on your AR-15. The A2 rear sight system is highly regarded for its durability, ease of adjustment, and proven performance in both military and civilian applications. This kit includes the rear sight base, windage drum, elevation knob, and all necessary hardware for a complete installation.

This assembly is ideal for builders creating retro-style rifles, service rifle competitors, or anyone who prefers the classic A2 sight picture and adjustment system. The precision machining ensures smooth operation of the windage and elevation adjustments, while the robust construction provides long-term reliability. Whether you are building a new rifle or upgrading an existing one, the UR-21K delivers authentic A2 performance with modern manufacturing quality.

Experience the quality of LUTH-AR components. The UR-21K A2 Rear Sight Assembly Kit offers a complete and reliable solution for installing classic A2 rear sights on your AR-15 platform.