Every AR-15 build or repair needs reliable small parts, and the takedown and pivot pin detents are among the most critical. This AR-15 Takedown / Pivot Pin Detent is the small but essential spring-loaded component that locks your rifle’s takedown and pivot pins securely in place, preventing them from walking out during use. Whether you’re assembling a lower receiver from scratch or replacing a lost or damaged detent, this part is non-negotiable for safe and proper function. Sourced for durability and offered with fast shipping from Miami Shooters Supply, it’s a must-have in any builder’s spare parts kit.
Key Features
- Manufactured from hardened spring steel for consistent tension and long-term reliability.
- Precision ground to the correct diameter and length for a perfect fit in standard AR-15/M4 lower receivers.
- Designed to work with standard takedown and pivot pin springs.
- Essential for maintaining proper pin retention and ensuring the upper and lower receivers remain securely mated.
- Sold as a single detent, allowing you to purchase exactly what you need for your build or repair.
Built For
This detent is built for the AR-15 owner who understands that reliability starts with the smallest components. It’s ideal for home builders assembling a new lower receiver, as well as for experienced shooters performing maintenance or replacing a detent that was lost during a field strip. Having a spare on hand is simply smart practice.
Specifications
- Material: Hardened Steel
- Compatibility: Standard AR-15, M4, and MIL-SPEC lower receivers.
- Function: For use with both the front pivot pin and rear takedown pin.
- Installation: Requires a standard detent spring and appropriate installation tool.
FAQ
Is this just one detent or a pair?
This is for a single AR-15 takedown / pivot pin detent. You will need two for a complete lower receiver assembly (one for the pivot pin, one for the takedown pin).
Will this work with my polymer lower receiver?
Yes, this standard steel detent is compatible with both forged aluminum and polymer lower receivers designed for the AR-15 platform.
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