From the Manual:

Your weapons arsenal makes you lethal on the battlefield. You're probably already familiar with them, but here are briefs on the weapons. Since you carry only two weapons at a time besides grenades, you need to know the pros and cons of whether or not to swap one weapon for another in a given situation.

Here is a list of the weapons that are used in Halo and as well as Hi&E. Every possible detail is included and please remember the color codes:

Most of the infomation upon this site is false and unoffical.

M9 HE-DP Grenade - This M9 high-explosive, dual-purpose grenade is a thrown fragmentation device.

M6D Pistol - This pistol is a recoil-operated, magazine-fed handgun.

MA5B Assault Rifle - This rifle is gas-operated and magazine-fed.

M90 Shotgun - The shotgun is a pump-action magazine-fed (dual tubular non-detachable type) weapon.

S2 AM Sniper Rifle - This rifle is a gas-operated magazine-fed weapon.

M 19 SSM Rocket Launcher - The M 19 SSM is a man-portable and shoulder-fired rocket launcher.

M41 LAAG - The Warthog's M41 light anti-aircrafy gun is a three-barreled, electrict-powered, linkless, drum-fed eapon.

BattleRifle - Data coming soon.

SMG - Data coming soon.