Editing M810 Helix point defense gun

{{Status|Canon}}
{{Weapon infobox
|image=
|name=M810 Helix point defense gun<ref name="Warfleet">''[[Halo Warfleet]]'', p. 40</ref>
|manufacturer=[[United Nations Space Command|UNSC]]
|model=
|type=[[Point-defense gun]]/autocannon
|cost=
|size=
|damage per hit=
|magazine=
|maxammo=
|fire=
|ammotype=
|operation=Computer/AI operated
|rate=Rapid
|accuracy=
|optics=
|range=
|service=*[[Insurrection]]
*[[Human-Covenant War]]
|affiliation=[[United Nations Space Command|UNSC]]
}}

The '''M810 Helix point defense gun''', also known as '''AAA Helix gun''' or '''Helix System''', is a [[United Nations Space Command]] starship-mounted [[point-defense gun|point defense weapon]].{{Ref/Anthology|Id=Cole|Evo|The Impossible Life and the Possible Death of Preston J. Cole}} This autocannon can be found affixed to human [[capital ship]]s during the [[Insurrection]] and the [[Human-Covenant War]] as late as the [[Battle of Psi Serpentis]] in [[2543]].{{Ref/Reuse|Cole}}

==Overview==
The Helix is a point-system employed for shooting down inbound threats such as [[Space fighter|strikecraft]] and [[missile]]s. They are described as being "''spun up and hot''", indicating that they are [[Wikipedia:Rotary cannon|rotary cannons]].{{Ref/Reuse|Cole}} As with most UNSC point-defence, they are likely automatically operated by an [[artificial intelligence]].

==Usage==
Helix PDGs are primarily employed on the larger warships of the [[UNSC Navy]], with their earliest known usage in [[2473]], with the introduction of the {{Class|Epoch|heavy carrier}} into service. They were employed on a handful of [[cruiser]]s in the early [[:Category:26th century|26th century]], though have since yet to see any reintroduction on the newer fleets of the [[Post-Covenant War conflicts|post-war era]].

On at least the {{Class|Halcyon|light cruiser}}, the Helix can be interchangeably fitted with the [[M910 Rampart point defense network|M910 Rampart PDG]].{{Ref/Reuse|Enc22Cruisers}} It is unknown whether this capability extends to the rest of the fleet - if so, the Helix may be additionally capable of being employed on the warships listed [[Rampart point defense gun#M910 Rampart|here]].

;Carriers
*{{Class|Epoch|heavy carrier}} - 20x M810 Helixes{{Ref/Book|Enc22|Page=127}}

;Cruisers
*{{Class|Valiant|super-heavy cruiser}} - Unknown{{Ref/Reuse|Cole}}{{Ref/Note|The short story ''The Impossible Life and Possible Death of Preston J. Cole'' describes the {{UNSCShip|Everest}} as being equipped with Helix PDGs, though the ''Valiant'' entry in the ''[[Halo Encyclopedia (2022 edition)]]'' does not mention these weapons for the ship class. It may be that the loadout of the standard ''Valiant''s versus the ''Everest''{{'}}s command refit brought with it a new suite of point-defense guns. Alternatively, as with the ''Halcyon''-class, these weapons may simply be interchangeable with the listed stat of 50x M910 Ramparts.}}
*{{Class|Marathon|heavy cruiser}} - 12x M810 Helixes{{Ref/Book|Id=Enc22Cruisers|Enc22|Page=118-119}}
*{{Class|Halcyon|light cruiser}} - 40x M810 Helixes (optional; can be replaced with [[Rampart point defense gun#M910 Rampart|M910 Ramparts]]){{Ref/Reuse|Enc22Cruisers}}

;Destroyers
*{{Class|Able|heavy destroyer}} - Unknown{{Ref/Reuse|Cole}}

==List of appearances==
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
**''[[The Impossible Life and the Possible Death of Preston J. Cole]]'' {{1st}}

==Notes==
{{Ref/Notes}}

==Sources==
{{Ref/Sources}}

{{UNSC heavy weapons}}

[[Category:Autocannons]]
[[Category:UNSC naval weapons]]