A3 Industries Ball Detent Takedown Pins Stribog Black. Designed for smooth insertion and removal without the need for tools this set includes both a 1.475'' pin and a 1.680''. Durable precise and built for repeated use these pins offer a simple upgrade over standard takedown hardware. Specifications for A3 Industries Ball Detent Takedown Pins Stribog: Manufacturer: A3 Industries Color: Black Fabric/Material: 17-4 Stainless Steel Steel Package Contents: A3 Industries Ball Detent Takedown Pins Stribog A3 Industries BDP-010: Ball Detent Takedown Pins Stribog Black