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{{Era|Human|HCW}}
{{Status|Canon}}
{{References}}
[[File:Ammo_-BR.png|thumb|150px|An M634 9.5×40mm KURZ from ''[[The Art of Halo 3]]''.]]
[[File:Ammo_-BR.png|thumb|150px|A M634 9.5x40mm KURZ from ''[[The Art of Halo 3]]''.]]
'''M634 Experimental High-Powered Semi-Armor-Piercing''', abbreviated as '''M634 X-HP-SAP''' or '''M634 9.5×40mm HP-SAP''', and also known as the '''9.5×40mm KURZ''',<ref name="art3">'''[[The Art of Halo 3]]''', ''page 57''</ref>{{Ref/Note|''Kurz'' is a German word for "short".}} is a 9.5×40mm rifle cartridge made specifically for the BR55, the BR75,{{Ref/Book|Id=EN|Enc22|Page=168}} and the BR85 series.<ref name="waypoint">[https://www.halowaypoint.com/en-us/universe/weapons/battle-rifle '''Halo Waypoint''': ''Battle Rifle'']</ref>
'''M634 Experimental High-Powered Semi-Armor-Piercing''' (abbreviated '''M634 X-HP-SAP''') ammunition is a type of [[United Nations Space Command]] rifle projectile that is made specifically for the [[UNSC]] [[Battle Rifle|BR55 Battle Rifle series]]. Its metric dimensions are 9.5x40mm, compared to the [[7.62x51 NATO|7.62x51mm NATO]] [[Rounds|rounds]] used in the [[MA5 Series]] of UNSC assault rifles. It was introduced into the [[UNSC Marine Corps]] along with the [[BR55 Battle Rifle]].


In combination with the BR55 Battle Rifle, this round is accurate enough that the 2x scope on the Battle Rifle is useful. Even when fired in three-shot bursts, the round produces little recoil resulting in very little muzzle lift. It is more effective against both shielded and unshielded [[Covenant]] personnel than the 7.62x51mm NATO, as the increased accuracy leads to an increased number of headshots and the increased kinetic energy of the round leads to faster shield depletion and increased damage to unshielded enemies. It has been shown that a [[BR55 Battle Rifle]] with M634 ammunition does enough damage to kill an opponent faster than an [[MA5C Assault Rifle]] using 7.62x51mm NATO ammunition. Overall, the M634 Experimental High-Powered Semi-Armor-Piercing round provides good accuracy, controllability, and effectiveness against all personnel.
==Overview==
 
The M634 X-HP-SAP was developed in conjunction with the prototype [[XBR55 Battle Rifle]]. As an experimental round, its use is only limited to the [[BR55 Battle Rifle]], the [[BR55 Heavy Barrel Service Rifle]], the [[BR75|BR75 Battle Rifle]], and the [[BR85 Heavy Barrel Service Rifle]]. While the round was designated as experimental around [[2525]], at some point between then and [[2558]], the "experimental" designation was dropped, becoming the M634 9.5×40mm HP-SAP.{{Ref/Reuse|waypoint}}
However, while the M634 X-HP-SAP does do more damage than the 7.62x51mm NATO against vehicles, it is still not a very effective round at damaging or stopping vehicles.


==Properties==
==Properties==
As designated in its name, the M634 X-HP-SAP is an experimental round. It uses a special propellant that allows it to achieve a higher muzzle velocity than the M118 7.62×51mm round while using a smaller cartridge. It is also semi-armor-piercing, meaning that it mixes the properties of an [[armor piercing round]] with the properties of another type of round. The second type is unknown, though it is most likely similar to the [[M225 SAP-HE]] used in the [[M6 Series]].


As designated in its name, the M634 X-HP-SAP is an experimental round. It uses a special propellant that allows it to achieve a higher muzzle velocity than the [[7.62x51mm NATO]] while using a smaller cartridge. It is also semi-armor-piercing, meaning that it mixes the properties of an [[Armor Piercing Rounds|armor-piercing round]] with the properties of another type of round. The second type is unknown, though it is most likely similar to the [[M225 Semi-Armor-Piercing High-Explosive]] used in the [[M6 Series]].
==Gallery==
 
<gallery>
==Behind the Scenes==
File:H2A 9.5x40mm in Mag.jpg|thumb|A 9.5×40mm cartridge in a magazine used to feed the [[BR55 Service Rifle|BR55 service rifle]] in ''[[Halo 2: Anniversary]]'' multiplayer.
Unlike most ammunition types in the Halo games, this is not a real-life ammo type, the closest comparison being the [[wikipedia:9x39mm|9x39mm]] special purpose round. Designed in the Soviet Union, this round was designed to defeat body armor at ranges closer than 100 meters, and be subsonic, so it can be easily used in suppressed firearms. In fact, most weapons firing it have an ''integrated'' silencer.
File:H2A BR55 Spent Brass.jpg|thumb|Spent 9.5×40mm casings ejecting from a [[BR55]] in ''Halo 2: Anniversary'' multiplayer.
 
</gallery>
The M634 is likely the result of the human inclinations towards bigger things (leading to the 9.5 mm bullet) and technological manipulation (leading to the experimental propellant).
 
It's also possible the large caliber, while overkill by current standards, is required to defeat the advanced body armour of the Insurrectionists and later the Covenant.


==List of appearances==
==List of appearances==
*''[[Halo: First Strike]]''
*''[[Halo: First Strike]]'' {{1st}}
*''[[Halo 2]]''
*''[[Halo 2]]''
*''[[Halo 3]]''
*''[[Halo 3]]''
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
*''[[Halo: Evolutions - Essential Tales of the Halo Universe]]''
*''[[Halo 4]]''
**''[[Spartan Ops]]''
*''[[Halo: Spartan Assault]]''
*''[[Halo: Escalation]]''
*''[[Halo 2: Anniversary]]''
*''[[Halo 5: Guardians]]''
*''[[Halo Infinite]]''
==Notes==
{{Ref/Notes}}
==Sources==
{{Ref/Sources}}


{{UNSC Infantry Weapons}}
{{Ammunition}}
[[Category:Ammunition]]

Latest revision as of 07:11, December 21, 2023

An M634 9.5×40mm KURZ from The Art of Halo 3.

M634 Experimental High-Powered Semi-Armor-Piercing, abbreviated as M634 X-HP-SAP or M634 9.5×40mm HP-SAP, and also known as the 9.5×40mm KURZ,[1][Note 1] is a 9.5×40mm rifle cartridge made specifically for the BR55, the BR75,[2] and the BR85 series.[3]

Overview[edit]

The M634 X-HP-SAP was developed in conjunction with the prototype XBR55 Battle Rifle. As an experimental round, its use is only limited to the BR55 Battle Rifle, the BR55 Heavy Barrel Service Rifle, the BR75 Battle Rifle, and the BR85 Heavy Barrel Service Rifle. While the round was designated as experimental around 2525, at some point between then and 2558, the "experimental" designation was dropped, becoming the M634 9.5×40mm HP-SAP.[3]

Properties[edit]

As designated in its name, the M634 X-HP-SAP is an experimental round. It uses a special propellant that allows it to achieve a higher muzzle velocity than the M118 7.62×51mm round while using a smaller cartridge. It is also semi-armor-piercing, meaning that it mixes the properties of an armor piercing round with the properties of another type of round. The second type is unknown, though it is most likely similar to the M225 SAP-HE used in the M6 Series.

Gallery[edit]

List of appearances[edit]

Notes[edit]

  1. ^ Kurz is a German word for "short".

Sources[edit]

  1. ^ The Art of Halo 3, page 57
  2. ^ Halo Encyclopedia (2022 edition), page 168
  3. ^ a b Halo Waypoint: Battle Rifle

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List of known ammunition used by the UNSC
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