Top Definition
The MA5B Assault Rifle is gas-operated and magazine-fed. It fires 7.62mm armor-piercing rounds. Rate of fire is limited by a soldier's ability to aim, fire and change magazines. Short, controlled bursts are more accurate than fully automatic fire.
MSgt. Rotteveel fired a three-round burst into the head of the crimson Elite.
by Militant Liberal April 16, 2005
1 more definition
The specific name for the of assault rifle used by the UNSC.
Corporal Bob blasted the Elite's head off with his trusty MA5B.
by Militant Liberal April 05, 2005

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