BATTLEARMS AR15/M16/M4 Buffer Retainer / Detent

The BATTLEARMS AR15/M16/M4 Buffer Retainer / Detent is a precision-machined small part designed to hold the buffer and spring securely in place within the receiver extension. Essential for proper AR-platform operation, this component ensures smooth function during assembly, maintenance, and firing cycles.

Manufactured to exacting Mil-Spec standards, this buffer retainer provides long-lasting durability and reliable performance, making it a must-have for builders, armorers, and replacement needs.

Features

• Buffer retainer detent for AR15/M16/M4 platforms
• Keeps buffer and spring properly aligned in the receiver extension
• Mil-Spec design for precise fit and function
• Durable construction for extended service life
• Ideal for builds, repairs, and spare parts kits

Specifications

• Type: Buffer Retainer / Detent
• Compatibility: AR15, M16, and M4 platforms
• Material: Hardened steel with protective finish
• Finish: Black, corrosion-resistant coating

Why Choose BATTLEARMS?

BATTLEARMS® is trusted by builders and shooters worldwide for high-quality, Mil-Spec small parts and components. Their buffer retainers are engineered for precision and reliability, ensuring your rifle functions smoothly and consistently round after round.

Customer Reviews

⭐⭐⭐⭐⭐ (5/5) “Simple part but critical. Fit perfectly and works exactly as it should.” – Verified Customer

⭐⭐⭐⭐⭐ (5/5) “Dropped right into my lower build. Solid quality from BATTLEARMS as expected.” – AR Builder