The Atlas BT19 A.A.I.S. Spigot is used to adaptno-clamp atlas bipods to the Accuracy International stock factory mounting system. Machined from mil-Spec type III hard anodized 6061-T6 aluminum
IMPORTANT: When installing the BT19, please be sure to loosen the Tension Nut as much as possible before inserting the Spigot into the stock. Push the Spigot into the receptacle using the Tension Nut until there is a good, solid “click” of the spigot locking into place, then tighten the Tension Nut.