Editing M9109 ASW/AC MLA

{{Ratings}}
{{Era|HCW}}
<center>''Were you looking for the [[AAA Helix Gun]]?''</center>
{{Weapon
|image=[[File:Point Defence Gun.jpg|300px]]
|name=M9109 ASW/AC 50mm MLA
|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 '''M9109 ASW/AC 50mm MLA'''<ref>'''[[Halo: reach]]''' - ''Game Manual''</ref>, also known as the '''Point Defence Guns'' is a [[United Nations Space Command]] starship-mounted weapon that fires 50mm high-explosive projectiles.<ref name="Flood215">'''[[Halo: The Flood]]''', ''page 215''</ref>

==Design details==
===Functionality===
The M9109 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 and also 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. The ODSTs utilised the scavenged defense weapons and used them as anti-air defensive emplacements at [[Alpha Base (Installation 04)|Alpha Base]]. The [[GA-TL1 Longsword Interceptor]] is also equipped with these turrets, used in an air-to-surface combat capacity during tactical strikes.<ref>'''[[Halo: Reach]]''' - ''Game Manual''</ref>

==Gallery==
<gallery widths="150">
File:Origins - Defensive Measure.png|A [[Halcyon-class cruiser]] defending itself form the Covenant boarding crafts using its point defense guns.
File:UNSC Savannah.jpg|The {{UNSCShip|Savannah}} using its point-defense guns against the [[Ardent Prayer]] in [[Operation: UPPERCUT]].
</gallery>

==Sources==
<references/>

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