The Armored Gun System was a competition in the 1980s to design a light tank

Light tank

A light tank is a tank variant initially designed for rapid movement, and now primarily employed in low-intensity conflict. Early light tanks were generally armed and armored similar to an armored car, but used tracks in order to provide better cross-country mobility.The light tank was a major...

 to replace the M551 Sheridan

M551 Sheridan

The M551 Sheridan was a light tank developed by the United States and named after Civil War General Philip Sheridan. It was designed to be landed by parachute and to swim across rivers. It was armed with the technically advanced but troublesome M81/M81E1 152mm gun/launcher which fired conventional...

 in the 82nd Airborne Division, as well as being expected to replace TOW-equipped HMMWVs in the 2d Stryker Cavalry Regiment (2nd ACR).

Cadillac Gage offered its Stingray light tank

Stingray Light Tank

The Stingray Light Tank is a light tank produced by Textron Marine and Land Systems Division . It was originally developed for the U.S. Army's Armored Gun System competition. Thailand is the only user.- Stingray :...

 with the traditional four-man layout. FMC offered the Close combat Vehicle Light (CCVL) with a three-man configuration. Teledyne offered its Expeditionary tank

Expeditionary tank

The Expeditionary tank was a United States light tank developed for the Armored Gun System competition in the 1980s by Teledyne Vehicle Systems .-Development:...

 which had a two-man layout with an experimental unmanned turret. In 1992, FMC's design was selected and type classified as the M8 Armored Gun System.