UNSC weapons

M392 DMR

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m6 spartan laser

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m7s caseless submachine gun ( only by ODST)

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m7 smg

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The M41 Surface-to-Surface Rocket Medium Anti-Vehicle / Assault Weapon

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m90 shotgun

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br55 battle rifle

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srs99-am sniper rifle

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M6 Series

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MA5D assault rifle

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Republic weapons

DC-17 Blaster Pistol

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Z-6 rotary blaster cannon

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RPS-6 rocket launcher

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DC-15A Blaster Rifle

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DC-15S Blaster Carbine

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Star fleet weapons

Type-2 phaser

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type 3 phaser rifle

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Three regiment weapons

Omni-directional mobility gear or more better known as ODM gear

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Thunder spears 

they can also attach to the ODM and APG gear as well

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 anti personnel gear or APG gear for short