A3 Industries Ball Detent Takedown Pins B&T APC9 and GHM Black. Designed for smooth insertion and removal without the need for tools this set includes both a 1.475'' pin and a 1.60''. 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 B&T APC9 and GHM: Manufacturer: A3 Industries Color: Black Fabric/Material: 17-4 Stainless Steel Steel Package Contents: A3 Industries Ball Detent Takedown Pins B&T APC9 and GHM A3 Industries BDP-011: Ball Detent Takedown Pins B&T APC9 and GHM Black