Ensure your AR-15 carbine runs smoothly and reliably with the Aero Precision AR-15 Carbine Buffer Spring. This mil-spec buffer spring is designed for use in AR-15 rifles equipped with a carbine-length buffer tube and collapsible buttstock, making it ideal for both new builds and maintenance upgrades. 

Why It Matters

• Critical recoil-system component: The buffer spring absorbs and manages the energy from the bolt carrier group as it cycles, ensuring the bolt returns positively and the rifle reliably chambers the next round. 

• Mil-Spec reliability: Built to proper AR-15 specifications, this buffer spring maintains consistent cycling — whether you run standard loads or suppressed configurations. 

• Easy replacement: Ideal for replacing worn springs or refreshing older rifles, the Aero Precision buffer spring requires no special tools — just open the stock, remove the old spring, and drop in the new one.

Specifications

• Type: Carbine buffer spring

• Compatibility: AR-15 rifles with carbine-length buffer tube & collapsible stock 

• Includes: Single buffer spring (buffer not included)

Whether you're building a new rifle or maintaining an existing one, the Aero Precision AR-15 Carbine Buffer Spring is an inexpensive but essential component that helps keep your rifle running smoothly, reliably, and safely — shot after shot.