Mark 2551 Portable Magnetic Accelerator Cannon

The Mark 2551/25 cm Portable Magnetic Accelerator Cannon is an upgraded variant of the Mark 2488 Magnetic Accelerator Cannon developed by Misriah Armory and is used on both  and Ivanoff Research Station.
==Differences from the Mark 2488==
*Less powerful.
*The coils glow blue when the gun fires.
*A pair of blue bars of light circle the coils when fired.
*Much deeper firing sound than the 2488.
*The vent on the rear of the gun lacks the white lights of the Mark 2488
==Trivia==
*In the Halo 4 mission Composer, the cannon is operable by the player through a glitch.YouTube - Halo 4 - NEW Vehicle: Piloting the Mac Cannon Glitch
==Gallery==
H4 Ivanoff Defenses.jpg|Onagers used during the defense of Ivanoff Station in Halo 4.
==Appearances==
*Halo 4 
==Sources==
Category:Human Weapons
Category:Anti-Aircraft Emplacements