We have made a list of Halo 3 Weapons with descriptions. For some of the weapons we have attached videos of them.

HUMAN WEAPONS

M6G Pistol (dual-wieldable): Your standard side arm. According to the opinion of most players in Halo 3 beta to date this weapon is not as strong as the pistol in Halo 1, but strong than in Halo 2.

M7 SMG (dual-wieldable): A weapon for close courter combat, known for its high rate of fire. This weapon is similar to the SMG found in Halo 2, capable of spraying a stream of bullets at users.

MA5C Assault Rifle: Your standard spawn weapon, with a good power and rate of fire. This weapon has had the most changes from Halo 2, it is similar to the MA5B Assault Rifle from Halo, but with more power. That was the major problem with Halo 2, the SMG was too weak while the Battle Rifle was to strong as a default spawn weapon. So in Halo 3 Bungie made the good decision by introducing this revised MA5C Assault Rifle.

M 90 Shotgun: Is the standard close courter weapon for the USMC. In the public beta, the weapon is very effective in close combat. It hold six shells Basically aim and shot, the person is dead.

BR 55 Battle Rifle: It has a larger punch than the assault rifle, but only holds 12 bullets. In addition, it has more recoil and can only fire in three bullet burst.

SRS99D Sniper Rifle: This is the basic sniper rifle used in the USMC, it is the most powerful infantry weapon in Halo. However, ammo for this weapon is difficult to find. In Halo 3 beta, the weapon is still the same as in Halo 2, but instead of using a video image for the scope it uses vector rendering.

M41 Rocket Launcher: The rocket launcher has a x2 scope and can fire rockets at long distance to devastating effect. However, unlike in Halo 2, it does not have a locking mechanism. This is similar to the rocket launcher in Halo 1.

M6 Spartan Laser: The M6 Spartan Laser is a shoulder-mounted direct energy weapon used by the UNSC. It fires an extremely powerful red laser, capable of destorying vehicles and infantry with one accurate strike. When the trigger is pulled, a targeting dot is projected. The laser will then charge for three seconds before firing its powerful and destructive burst. According to some players who have player Gears of War, reminds them of the Gear of War weapon the Hammer of Dawn.

Portable Turret: By going near a turret and pressing B you can remove gun from the holder and carry it around with you. However, when you are carrying the gun, you can't zoom, melee, throw grenads, dual wield, drive or ride vehicles or crouch.

Missile Pod: Is a new weapon in new weapon in Halo 3 beta. It is similar to the Rocket Launcher, but you can lock on to targets. When using the missile pod you can't zoom, melee, throw grenades, dual wield, drive or ride vehicles or crouch.

M9 HE DP Fragmentation Grenade: The Fragmentation Grenade unlike the plasma grenade bounces rather than sticks. In Halo 3 you can only carry two of these grenades at once.