AR Buffer Retainer Spring

AR-15/AR-10 Buffer Retainer Spring provides the preload needed to keep the buffer retainer pin engaged and retains the buffer and spring inside the buffer tube. Compatible with AR-15 and AR-10 standards, made from heat-treated spring steel. Keywords: AR-15/AR-10 buffer retainer spring, buffer retainer, MIL-SPEC.

Key benefits

• Stable cycling – proper preload on the buffer retainer pin.
• MIL-SPEC compatibility – fits most AR receivers and buffer tubes.
• Heat-treated spring steel – increased wear resistance and service life.
• Easy installation – drop-in replacement with standard dimensions.

Purpose

The spring applies pressure to the buffer retainer pin, keeping the buffer and buffer spring correctly positioned and reducing the risk of cycling malfunctions.

Compatibility

• Platforms: AR-15, AR-10.
• Standards: MIL-SPEC receiver and buffer tube.
• Replaces the stock spring without modification.

Materials and finish

• Material: spring steel, heat-treated.
• Finish: anti-corrosion treatment.
• Geometry: conforms to the MIL-SPEC pin seat.

Package contents

• Buffer retainer spring – 1 pc.

Specifications

• Product type: Buffer Retainer Spring.
• Platform: AR-15/AR-10.
• Purpose: preload for the buffer retainer pin.
• Installation: no special tools required, standard procedure.

FAQ

Is it compatible with a commercial buffer tube?

Yes, provided the receiver and the pin seat follow MIL-SPEC geometry.

Do I need lubrication?

A light coat of gun oil for corrosion protection is sufficient. Continuous lubrication is not required.

Will it work on AR-9/PCC?

Yes, as long as the receiver dimensions and pin seat match AR-15 specifications.