Sig Custom Works P320 Fire Control Unit Review | The Missing FCU of the Puzzle?
This review of the Sig Custom Works P320 Fire Control Unit (FCU) highlights its value for firearm builders. The FCU acts as the serialized component, allowing users to create multiple custom P320 configurations by pairing it with various slides, barrels, and grip modules without transferring the FCU. While the trigger feel is comparable to a standard P320, the FCU is presented as the 'missing piece' for those with existing P320 parts or those building from scratch.










