| Sentry Gun | Points | Front Armour | Side Armour | Rear Armour | BS |
|---|---|---|---|---|---|
| 15 per gun | 10 | 10 | 10 | 2 |
Type: Immobile
Crew: None
Weapons: The Sentry Gun is armed with twin-linked heavy bolters.
Options: Any Sentry gun can replace its heavy bolters with twin-linked las cannons for +10 pts.
Heavy Support: You can take up to three Sentry guns as one Heavy Support choice for an Imperial Guard army. These guns do not have to be deployed as a battery.
Special Rules
Firing Modes: A Sentry gun can fire in one of two modes. You must decide which mode the Sentry gun will be set in before the start of the game. You cannot change the mode once you have decided, it remains in that mode for the rest of the game.
Point Defence Mode: The Sentry gun can be set up with a fixed fire arc, usually to provide covering fire over a particular area. In this mode, the gun will engage enemy targets up to 24" away which are within a fixed 90° arc.
Sentry Mode: In this mode, the gun is set up to fire at any enemy which comes near, and will always turn to fire at the nearest enemy target within 12" to which it can draw a line of sight. It can fire all around.
Targeting: Which enemy unit a Sentry gun will target is dictated by its armament.
A heavy bolter equipped Sentry gun will fire at the nearest non-vehicle within its firing mode.
Lascannon equipped Sentry guns will fire at the closest enemy vehicle or large monster within its firing mode.
If there is no preferred target, then the nearest other target will be engaged. Only destroyed vehicles are ignored, immobilised vehicles will still continue to be targeted. Sentry guns have a BS of 2.
Damage: As a remote vehicle a Tarantula is destroyed by any glancing or penetrating hit.