The AGR-14 fires at supersonic speeds and makes a very intimidating roar when it does so. It is capable of firing jacketless slugs that can tear through a human body, depleted uranium rounds, steel tipped anti-personnel rounds, and incendiary rounds, all fired through magnetic acceleration. Ultrasonic pulses capable of stunning enemies can also be fired.
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The weapon can also fire armor piercing rounds and can launch grenades in secondary fire mode.
The AGR effectively replaced the C-20A rifle as Nova's standard weapon in StarCraft: Ghost. In the game, it was said that the weapon became the standard armament of ghosts. This is null to at least some extent, as the C-10 rifle remains standard in Wings of Liberty (and other products), with the AGR instead becoming the de facto weapon of spectres.