Pins, Springs & Detents

Essential AR-15 Small Parts for Reliable Function

While often overlooked, AR-15 pins, springs, and detents play a critical role in how your rifle operates. These components control retention, tension, and movement across the upper and lower receiver, directly impacting reliability and ease of use.

AR-15 Pins

AR-15 pins are used throughout the platform to secure components such as triggers, bolt catches, and takedown assemblies. Properly sized pins ensure consistent alignment and smooth operation during use and maintenance.

AR-15 Springs

Springs provide the tension required for controls and moving parts to function correctly. High-quality AR-15 springs help maintain consistent engagement, positive resets, and long-term reliability across the rifle.

AR-15 Detents

Detents work in conjunction with springs to provide tactile feedback and controlled movement for components like safety selectors, takedown pins, and magazine releases. Precision detents help ensure positive engagement and repeatable operation.

Compatibility & Fitment

Our AR-15 pins, springs, and detents are designed to fit standard AR-15 upper and lower receivers unless otherwise noted. Always verify compatibility with your specific components prior to installation.

Build with Confidence

Whether you’re assembling a complete rifle or keeping spare parts on hand, our AR-15 pins, springs, and detents provide the foundation for reliable performance and clean, precise builds. Explore individual components or replacement parts designed to keep your rifle running smoothly.

AR-15 Springs and Detents for Lower Receiver Builds

Whether you're replacing lost parts or completing a fresh build, quality small components matter. Our AR-15 detent spring and pin set fits front pivot and rear takedown applications on most mil-spec AR-15 lowers.

Browse all AR-15 takedown pins to complete your lower parts setup.