Editing M9109 ASW/AC MLA

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{{Era|H3|RE|FOR|TF|LE}}
<center>''Were you looking for the [[AAA Helix Gun]]?''</center>
{{Weapon
|image=
|name=Point-Defense Gun
|manufacturer=
|model=
|type=
|cost=
|size=
|damage per hit=
|magazine= Blocks<ref name="Everest"/>
|maxammo=
|fire=
|ammotype= 50mm High-Explosive
|operation= Computer/AI operated<ref name="nav">'''Halo: The Fall of Reach''', page 19</ref>
|rate of fire=
|accuracy=
|range=
|era=26th Century<ref name="Everest">'''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''' - ''[[The Impossible Life and the Possible Death of Preston J. Cole]]'', page 475</ref>
|counterpart=[[Pulse Laser Turret|Covenant Pulse Laser Turret]]
|counterwep=
|affiliation=[[UNSC]]
}}

A '''Point-Defense Gun''' is a [[United Nations Space Command]] starship-mounted weapon that fires 50mm High-Explosive<ref name="Flood215">'''[[Halo: The Flood]]''', page 215</ref> projectiles.

==Design Details==
===Functionality===
The 50mm Point-Defense Gun functions much like the [[wikipedia:CIWS|CIWS]] designs created during the 20th Century, firing 50mm projectiles. Unlike [[Archer missiles]] and the [[Magnetic Accelerator Cannon|MAC]] weapon systems mounted on capital ships, the Point-Defense Guns are ''not'' used to engage Covenant capital ships, instead meant to intercept smaller threats like [[Seraph]] fighters<ref>'''[[Halo: The Fall of Reach]]''', page 272</ref> or boarding craft to prevent (or at least lessen) the damage inflicted to a warship.

Because [[Human]] operators lack the reflexive responses necessary to operate the Point Defense Guns to maximum effect, the autocannons are computer controlled and, if an AI is available, control is diverted to it. "Smart" AI's seem better able to operate the Point-Defense Guns than standard computers and even lesser "dumb" AI's.<ref name="nav"/>

===Operational History===
During the human occupation of [[Installation 04]], the ODSTs that recaptured and secured the wreckage of the {{UNSCShip|Pillar of Autumn}} from the [[Covenant Empire|Covenant]] managed to scavenge<ref>'''Halo: The Flood''', page 137</ref> several dual barreled<ref name="Flood215"/> 50mm turrets, using them as anti-air defensive emplacements at [[Alpha Base (Installation 04)|Alpha Base]]. These were ''not'' fitted to the [[Pelicans]] for use, but were carried underneath the dropships for transport to Alpha Base.

==Gallery==
<gallery widths="150" orientation="landscape">
File:Origins - Defensive Measure.png|A [[Halcyon-class cruiser]] defending itself form the Covenant boarding crafts using its point defense guns.
</gallery>

==Sources==
<references/>

{{UNSC Heavy Weapons}}
[[Category:Weapons]]
[[Category:UNSC technology]]
[[Category:Weapons|{{PAGENAME}}]]