ATLAS BIPOD AAIS BIPOD ADAPTER SPIGOT FOR AI/AICS STOCKS The BT19 Atlas Accuracy International Spigot (AAIS) is designed for use with any NC (No Clamp) style Atlas Bipod that mounts directly to the AAIS which plugs into the Accuracy International AI/AICS stocks utilizing the factory retention/release mechanism. The evolution of long range shooting and shooter's demand drove subtle changes to the BT19. The latest modification stops the 3 to 9 rotation. FEATURES It is machined from 6061-T6 aluminum that is Mil-Spec Type III hard anodized mated with an alloy steel Spigot that is finished with a Manganese Phosphate. Includes two Mfg: Accu-Shot