Mount

Generic tree
G
Mount
Long ActionPilotShort ActionMechRangeClose
You Mount a System or Module onto a target Mech in Range. The Mech must have enough System or Module Slots to mount the new System or Module and the slots must be empty.As part of this action you may dismount any number of Systems or Modules on the Mech to make room for the new System or Module. You may not Mount a damaged System or Module onto a Mech.
Ability
Salvage Union Workshop ManualPage 249