Armaspec Enhanced Takedown Pivot Pins Black. These enhanced takedown/pivot pins come with several enhancements for easy installation and operation. A convex head so it can be tapped from any angle. An extended concave tip for easy removal using any flat or pointed object including a bullet tip and an EZ-Set hole for detent installation. Pat. Pend. Specifications for Armaspec Enhanced Takedown Pivot Pins: Manufacturer: Armaspec Color: Black Country of Origin: USA Gun Model: AR-15 Features of Armaspec Enhanced Takedown Pivot Pins Fits for AR15/M16/M4 Package Contents: Armaspec Enhanced Takedown Pivot Pins What firearm models does the manufacturer say Armaspec Enhanced Takedown Pivot Pins is compatible with? The manufacturer suggests that Armaspec Enhanced Takedown Pivot Pins is compatible with AR-15Armaspec ARM137-BLK: Enhanced Takedown Pivot Pins Black