XM8 Compact

The XM8 Compact carbine is a variant of the XM8 assault rifle system, developed from the late 1990s to early 2000s.

Details
The XM8 Compact serves as Jones' primary weapon during the Kashmir missions and in the Advanced Training. It is equipped with a suppressor in both games plus laser in the Kashmir missions and oddly enough, a yellow muzzle brake on top of the suppressor in the Advanced Training.

It drops the "X" in the Kashmir missions, along with all other XM8 variants, suggesting that the US military officially adopted it in the game. However, in real life, this assault rifle was canceled in 2004, but eventually found some use when the Royal Malaysian Navy Forces adopted it in 2010.

It is also incorrectly classified as a submachine gun, despite the real XM8 compact carbine being an assault rifle, as it uses the same intermediate 5.56 NATO cartridge as opposed to pistol cartridges such as the 9x19mm. This is probably done for convenience purposes because normally Jones carries an SMG, and classifying it as an assault rifle would make him unable to use the weapon correctly due to him not being skilled in using assault rifles.

Trivia

 * Despite the weapon having a retractable stock, it is never extended in the game.