Integrated
An integrated weapon can be wielded normally or installed in an armor upgrade slot. When properly installed, the weapon is considered to be wielded without needing to assign a number of hands to wield it. An integrated weapon requires the listed number of armor slots for proper installation. An android or any other creature with the upgrade slot racial ability cannot combine its racial upgrade slot with armor upgrade slots to install an integrated weapon. Installing, removing, or replacing an integrated weapon in a suit of armor takes 10 minutes, as if it were an armor upgrade.
Source
Armory pg. 29