The AR-15 A2 rear sight base spring pin is a precision compression spring made from steel that provides the tension needed to keep your rear sight assembly functioning smoothly. This component is engineered to work with A2 rear sight bases and also serves as a compatible forward assist spring for AR-15 platforms. It's a small part that makes a real difference in how reliably your sights stay in place.
This spring pin is specifically designed for A2 rear sight base assemblies found on most AR-15 platforms. The compression spring design provides consistent tension that keeps your sight secure during shooting and adjustment. Whether you're building a new upper or maintaining an existing rifle, this component ensures your rear sight operates as intended.
Beyond rear sight use, this spring pin is also compatible with AR-15 forward assist assemblies. The engineering allows it to function effectively in either application, making it a versatile component for builders who need a reliable replacement spring. Having a spare on hand means you're covered for either repair scenario.
Made from steel with a natural finish, this spring maintains its compression characteristics through countless cycles. The material choice ensures the spring won't lose tension prematurely or fail under normal use. It's the kind of small component that doesn't get attention until you need it to work, and this one does.
Follow safe handling and manufacturer instructions. Ensure compatibility with all applicable federal, state, and local laws. Verify proper fit before installation.
Platform: AR-15
Component: Rear Sight Base Spring Pin / Forward Assist Spring
Sight Compatibility: A2 Rear Sight Assemblies
Alternate Application: AR-15 Forward Assist Assembly
Type: Compression Spring
Material: Steel
Finish: Natural Steel
Function: Provides Spring Tension for the Rear Sight Base Assembly
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