The M13A4 Puma was a Troop Transport Vehicle, developed post-Human Covenant War, by Aperture Science.
The M13A4 Puma was designed to transport multiple troops between positions in relative safety. The Puma was designed with thick armor on the sides and bottom, to protect from bullets, Plasma, and explosives.
The vehicle was protected by a single turret, located on the top of the vehicle. The weapon used in the turret was a Model 60 Machine Gun, standard on tanks and other armored vehicles, and loaded with Armor-Piercing bullets.