Sig Sauer P320 Fire Control Unit
This guide details the process of installing a Sig Sauer P320 Fire Control Unit (FCU) into various grip modules, highlighting the firearm's exceptional modularity. Expert instruction from Larry Vickers demonstrates how the FCU, as the serialized component, allows for easy swapping of grip modules, slides, and barrels without federal paperwork. This enables extensive customization for different applications, from concealed carry to competition.













