Atlas - Accuracy International Spigot Scope Mount The thread on this stem

The thread on this stem is a fine thread compared to the course thread for replacement stem of the BENCH REST seating die (listed separately)

The "STD" tool listed in the dropdown is a replacement part

To determine proper shell holder for your application please use the chart here

The Redding Big Boss II Press is built with some of the same features as the original Boss press but built on a heavier frame with a larger ram and more usable ram stroke to make loading large magnum cartridges a breeze

Atlas - Accuracy International Spigot Scope Mount The thread on this stemThe Atlas Accuracy International Spigot (AAIS) Part number BT19 Is designed for use with the BT10 NC Atlas Bipod that mounts directly to the AAIS which plugs into the Accuracy International AI AICS stocks utilizing the factory retention release mechanism. The AAIS is constructed from 6061T6 Aluminum with a type II hard coat anodize mated with an alloy steel Spigot that is finished with a Manganese Phosphate. **Important** When installing the BT 19