A Missile Lock was a piece of technology found on starfighters. They were used for targeting missile weaponry. Missile locks were found on the Rapier II, Scimitar and Raptor.
Inset of an Origin Aerospace Rapier II blueprint showing the missile lock.
Inset of an Origin Aerospace Raptor blueprint showing the missile lock.
Inset of an Origin Aerospace Scimitar blueprint showing the missile lock.