Luth-AR Retro A1 Rear Sight Assembly with Retro Windage Knob

The Luth-AR Retro A1 Rear Sight Assembly with Retro Windage Knob (Luth-AR part no. UR-21A-R) is a fixed rear sight built to recreate the classic A1-pattern sight picture on a modern AR build, right down to the period-correct windage knob styling. Luth-AR designs its Retro line specifically for shooters building a retro or vintage-style AR-15, where a modern flip-up sight would look out of place against classic furniture and a fixed front sight. It’s a direct, no-compromise way to complete an authentic retro build rather than settling for a modern sight that clashes with the rest of the rifle.

Key Specifications

• Recreates the classic A1-pattern rear sight profile.
• Includes a retro-style windage knob matching the original A1 aesthetic.
• Fixed, non-folding design, matching period-correct retro AR builds.
• Installs on a standard AR-15 upper receiver with no gunsmithing required.
• Pairs naturally with a fixed A1-style front sight for a complete retro iron sight setup.

Frequently Asked Questions

Is this a folding sight? No, it’s a fixed sight built to match the classic A1 rear sight profile.

What is this sight designed for? Retro and vintage-style AR-15 builds where a modern flip-up sight would look out of place.

Buy the Luth-AR Retro A1 Rear Sight Assembly

Complete your retro AR build with a period-correct rear sight. Order the Luth-AR Retro A1 rear sight from our Lubbock, Texas gun shop, part of our gun sights lineup, for fast, insured shipping.