Machined from titanium and designed to fit any standard AR-15 or M4 lower receiver, these Mean Arms Takedown and Pivot Pins are some of the best examples of these components on the market today. The Grade 5 6AL-4V titanium used in their construction is some of the strongest material on the market today, and each pivot pin is treated with a TiCN black coating. Each Mean Arms Titanium Takedown and Pivot Pin is machined with two through holes, allowing for fast and easy installation and removal. No longer will you have to struggle to install or remove the detents to get these pins into place!