The Colt AR15A4 Takedown Pin Detent is a small but critical component that keeps the rear takedown pin positively located in your AR-15, M16, or AR-15/M4 platform. Precision made to Colt specifications, this hardened detent helps ensure consistent lockup between upper and lower receivers and smooth takedown pin operation during disassembly and reassembly.

This detent is ideal as a replacement part for worn or lost components, or to keep on hand in a dedicated spare parts kit for your rifle. Whether you are maintaining a duty-style carbine, a competition rifle, or a range gun, a quality takedown pin detent supports reliable function and straightforward maintenance. It reflects Colt’s long-standing reputation for building dependable AR-15 pattern parts trusted by shooters and armorers worldwide.

• Manufacturer: Colt
• Model: AR15A4 Takedown Pin Detent
• Type: Takedown pin detent for AR-15 pattern rifles
• Compatibility: AR-15, M16, AR-15/M4
• Use: Replacement or spare part to retain the rear takedown pin