An AR-15 pivot pin takedown detent is a small, pointed pin that provides tension to the pivot and takedown pins, allowing them to lock securely in place and enabling easy assembly and disassembly of the rifle. It works with AR-15 lower receivers, pivot pins, takedown pins, detent springs, and lower parts kits. This detent is essential for proper function and secure fit of the upper and lower receivers in all standard AR-15 builds and repairs.
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