The Kns Precision .155'' Non-Rotating Pins are a premium upgrade for your AR-15 designed to enhance the durability and reliability of your firearm. These non-rotating pins are engineered to prevent wear and tear on your rifle's receiver ensuring long-lasting performance even under heavy use. Crafted from high-quality materials they provide a snug fit and seamless integration with your AR-15 offering peace of mind and improved operational efficiency. Ideal for both enthusiasts and professionals these pins are a must-have addition to maintain the optimal functionality of your firearm.