Tacfire AR-15 Buffer Detent Pin with Spring USA Made Stainless Steel

The Tacfire AR-15 Buffer Detent Pin with Spring is a critical internal component for any AR-platform rifle build or maintenance routine. This small but essential part ensures reliable function of your buffer tube assembly, preventing accidental disassembly and maintaining consistent spring tension during operation. Whether you're building a new rifle, performing maintenance, or replacing a worn component, this detent pin is foundational to safe and dependable AR-15 performance in the field or at the range.

Manufactured in the USA from stainless steel, the Tacfire buffer detent pin resists corrosion and maintains dimensional stability across environmental extremes—a critical requirement for law enforcement and military applications where reliability cannot be compromised. The integrated spring provides consistent retention force, holding the buffer tube cap secure without requiring secondary fasteners or modifications. Stainless steel construction delivers superior longevity compared to standard steel alternatives, particularly in humid or saltwater environments where corrosion can degrade function over time. The precision machining ensures a snug fit within the receiver, eliminating rattle and maintaining the structural integrity of your lower assembly.

This component benefits operators and builders of all skill levels—from seasoned gunsmiths performing complete builds to end-users conducting routine maintenance or parts replacement. Installation is straightforward, requiring no specialized tools beyond standard AR-15 assembly procedures. The detent pin is fully compatible with standard AR-15 and AR-308 lower receivers, making it a universal solution for most modern AR-platform rifles. Keep a spare on hand as part of your maintenance kit; this is exactly the type of small component that can prevent downtime when it fails unexpectedly.