The M597 Warthog Ammunition Carrier, usually simply called the Ammo Hog, is a variant of the UNSC Warthog. It works in conjunction with the Mastodon ASP.
The Ammo Hog is nearly identical in build to the regular Warthog, with the exception of the back. The back of the Ammo Hog is actually several compartments put together and mounted on the bed; in height, it rises above the cab, and it actually covers the top of it. The sides of this attachment are divided into several compartments that hold various forms of ammo, while the center is opened from the back and top, its' contents being the large ammo of heavy weapons such as Rocket Launchers, and the final section over the cab holds various larger bullets, such as Sniper Rifle ammo.