The Serbu ROF was a prototype high rate of fire 9mm submachine gun capable of firing 1200rpm. As of when these pictures were taken, the ROF has had over 3,000 rounds of ammo fired through it. Since the ROF was built after May 19, 1986, it is considered to be a "post-`86" dealer sample machine gun which can only be bought by licensed manufacturers, dealers, government entities or law enforcement. Needless to say, there isn`t really enough of a market to warrant making the ROF a production gun.