Hidden Killstreak in MW3

There apparently is a hidden killstreak at 25 kills. It is called the M.O.A.B. or the Mother Of All Bombs. WHen it is called in it kills everyone on the other team but doesnt end the game (LIKE THE STUPID NUKE IN MW2)

There is a catch, it can be only obtained by getting kills with your gun...... no killstreaks so save your pavelows and gunners. 25 kills BAREBONES

CHeck out this video I know when the bomb goes off the game is over but the guy just happen to call it in at the end of the game. ......the guy playing is a little annoying but it shows the Bomb.