Editing M634 Experimental High-Powered Semi-Armor-Piercing

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{{Status|Canon}}
9.5 mm x 40 is a kind of ammunition with a caliber of 9.5 mm.
[[File:Ammo_-BR.png|thumb|150px|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''',<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>


==Overview==
The only weapon that uses this caliber cartridge is the [[Battle Rifle]], which was introduced in [[Halo 2]] and will be returning in [[Halo 3]]. The fact that the Battle Rifle does much more damage than the original Assault Rifle]] could have to do with the larger bullets (Assault Rifle uses the 7.62mm AP-FMJ cartridge).
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}}


==Properties==
Interestingly enough, the BR and the weaker cousin of the [[M6D HE Pistol]], the M6C Magnum Sidearm, both use bullets with the same length, yet the BR does much more damage than the Sidearm.
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==
It is strange that this 9.5mm cartridge was even created. First of all, this cartridge is nearly 2mm wider than the biggest combat rifle cartridge, so it could be safe to say that the BR would have terrible recoil. But there are many theories. Future technology could counterbalance this large cartridge. Maybe some sort of advanced compensator or inhibitor. There is also the delayed blowback principle, in which in semi-automatic mode the rifles recoil occurs ''Italic text''after''Italic text'' the bullet leaves the barrel. And the heavy bullets are stored in the bull-pup style, so that helps too.      
<gallery>
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.
File:H2A BR55 Spent Brass.jpg|thumb|Spent 9.5×40mm casings ejecting from a [[BR55]] in ''Halo 2: Anniversary'' multiplayer.
</gallery>


==List of appearances==
{{Stub}}
*''[[Halo: First Strike]]'' {{1st}}
*''[[Halo 2]]''
*''[[Halo 3]]''
*''[[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}}
 
{{Ammunition}}

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