Vehicle-mounted variants of the M6 G/GNR have been found on UNSC aerial vehicles since at least 2531, as the primary armament of the AV-22 Attack VTOL. The M8 entered service at some point after the war, and by mid-2557, the M8C model was regularly mounted on the G79H-TC/MA Pelican gunship.
The M8C is presumably powered by a large Series 6971 battery, like its smaller cousin, the M6. It is at least three times as powerful as the portable variant, and is capable of downing Phantoms in just two hits. It is an extremely formidable anti-material weapon, and its blast radius is able to destroy multiple Wraiths in one hit. While its potency diminishes with distance, its beam is presumably lethal for a range of several miles.
- ↑ Halo 4: The Essential Visual Guide, page 113
- ↑ In Spartan Ops, Fireteam Crimson uses an armory of M6 G/GNRs against a squad of Phantoms. It takes six direct hits from the weapon to destroy one Phantom. In the campaign level, Shutdown, the Master Chief uses a M8C to destroy a fleet of Phantoms as well. It takes only two direct hits from the laser to destroy them. Using a glitch on certain Spartan Ops missions, Crimson can pilot a Pelican and use it against enemy armor. While an M6 usually requires at least two direct hits to destroy a Wraith, the splash damage from the M8C is enough to destroy a Wraith in a single hit.