Crafted from high-strength steel, this mil-spec pivot pin is engineered for durability and consistent performance, even under frequent use. Its precision machining to exact specifications ensures a seamless fit and smooth operation within any mil-spec AR-15 lower receiver. Designed as a drop-in replacement, it is fully compatible with all mil-spec AR-15 receivers, making it an excellent choice for new builds, upgrades or routine maintenance. Whether you're replacing a worn-out pin or assembling a new rifle, this OEM pivot pin promises exceptional durability and reliable, long-lasting performance. The pivot pin from Sons of Liberty Gun Works is an OEM component specifically engineered for mil-spec AR-15 rifles This critical component facilitates the secure connection between the upper and lower receivers, ensuring seamless operation and straightforward disassembly