UNSC Weaponry

The UNSC have a wide variety of weapons in their arsenal which all have their own strengths, weaknesses and unique capabilities. They are effective on easy and normal to gun down all covenant. The automatic fire of some of them can take down an Elite extremely quickly on both Halo: Combat Evolved and Halo 2. They are also far more effective than most Covenant weapons against the Flood, with some exceptions.

Halo: Combat Evolved
Below is a list and small description of all the UNSC weapons that can be used in Halo: Combat Evolved. To find out more about them, click on the weapon.


 * M6D HE Magnum Sidearm- Very effective with headshots thanks to the scope. Also very effective against Hunters. Slow firing rate is it's main disadvantage. Not very effective against the Flood.


 * MA5B ICWS Assault Rifle- The most commonly used human weapon in the game, can take down an Elite fairly easily on lower difficulty levels, but may require more than one clip on Heroic and Legendary. Second most effective weapon in close combat with the Flood.


 * M90 Shotgun- Can kill an Elite in one shot on Easy and Normal, also very effective against them on Heroic and Legendary. Can wipe out a pack of Grunts with 1-3 shots. The most effective close range weapon against the Flood.


 * SRS99C-S2 AM Sniper Rifle - Very effective from long distance. Has a X10 scope with a night-vision ability. Usually a one-hit-kill with headshots on all difficulties. Fairly poor from close range and does no damage to the Flood whatsoever.


 * M19 SSM Rocket Launcher- Extremely effective against large groups of enemies and vehicles. Has a X2 scope. Also very effective against the Flood. Useless from close range as it will kill the player as well.


 * M9 HE-DP Grenade- Better known as the Frag Grenade, effective against large groups and vehicles like the rocket launcher, but requires a shorter distance to throw. Good against the Flood, but pointless against all enemies if they stand alone. Elites sometimes dodge them by jumping out of the way.


 * M7057 Defoliant Projector Flamethrower- Only useable in Halo PC multiplayer. Releases fire and burns enemies, with little accuracy required.

Halo 2
Below is a list and small description of all of the UNSC weapons uses in Halo 2. To find out more about them, click on the weapon.


 * BR55 Battle Rifle- A new version of the Assault Rifle in Halo: Combat evolved. This fires short three-bullet bursts and has a X2 scope. Effective with headshots. Fairly effective against the Flood.


 * M9 HE-DP Grenade- Smaller blast radius than Halo: Combat Evolved. (See Above)


 * M6C Magnum- A stripped down version of the Pistol used in Halo: Combat Evolved. Not as effective without a scope but still good with headshots. Fairly ineffective against the Flood without getting dangerously close.


 * M90 Shotgun- Less rounds in one blast than Halo: Combat Evolved. Although it has the same M90 designation, it has slight differences from the shotgun from Halo: Combat Evolved. These include a change in the color of the weapon's sights, the weapon is slightly darker in coloration, and it has a much shorter effective range. (See Above)


 * SRS99C-S2 AMB Sniper Rifle- Rounds are slightly less powerful than Halo: Combat Evolved and it also lacks the night vision zoom ability. (See Above)


 * SMG- Very high rate of fire and good when dual wielding. Tends to move up when firing, meaning whoever is using it has to hold the gun down. Average against the Flood on its own, better when duel-wielding.


 * M41 SSR MAV/AW Rocket Launcher- Fairly similar to the Rocket Launcher in Halo: Combat Evolved. The main difference is the lock-on ability it has. Apart from that, no real change in ability.

Halo 3
These are the new weapons introduced in Halo 3.
 * SRS99D-S2 AM Sniper Rifle
 * M6G Magnum
 * Spartan Laser
 * Missile Pod
 * MA5C ICWS Assault Rifle
 * BR55HB SR Battle Rifle