The “small arms” of the Covenant, this is mainly used by grunts and jackals in the game. Capable of semi-auto fire, and charged shots - the latter which is, without a doubt, lethal to shielded enemies. The Plasma Pistol is , well, almost useless on its own - its not very fast, and single shots at the enemy dont do much damage.
But combine it with the M6D Pistol especially, and you have a devastating combo to wield, especially against Elites. Back then, players discovered the method of unloading a charged shot to deplete the Elite shielding, before killing it with a headshot from the Pistol. This has been passed down to every subsequent FPS Halo game. Likewise, a similar effect can be achieved on Jackals.
My Rating : 3/10 (On its own)
8/10 (With M6D)