This is a genuine replacement spring for the elevation knob assembly on AR-15 A2-style rear sights. The spring provides the retention and tension needed to keep your elevation adjustments locked in place and prevent the knob from rotating unexpectedly during use or transport.
The elevation knob spring is a critical component in the A2 rear sight base. It works within the elevation knob assembly to maintain tension on your adjustment clicks, ensuring that once you dial in your elevation, the knob stays put. Without proper spring tension, your elevation settings can drift or slip during shooting, affecting your zero. This replacement spring restores that tension and keeps your sight assembly functioning as designed.
This spring is designed for standard A2-style rear sight bases found on most AR-15 platforms. It fits the elevation knob assembly directly. Verify your rear sight base matches the A2-style configuration before purchasing to ensure proper fitment.
Double R Armory manufactures this spring from black steel, providing corrosion resistance and long-term durability. The split spring design allows for reliable retention without requiring special tools or complicated installation procedures. The precision engineering ensures consistent performance across multiple adjustment cycles.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
Platform: AR-15
Compatibility: A2-Style Rear Sight Assemblies
Component: Rear Base Elevation Knob Spring
Application: Rear Sight Elevation Assembly
Construction: Steel
Finish: Black
Design: Split Spring / Spring-Pin Style
Function: Provides Retention and Tension within the A2 Rear Sight Elevation Knob Assembly
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