I'm sure any experienced shooter will realize the folly of assualt weapons right away.
The theory is just crap on them anyways; sacrifice accuracy for rate of fire. I can see them being useful in mass-battle situations where you couldn't help but hit the enemy (Civil war style gatling guns, etc) but for the modern soldier/hunter/whatever, accuracy has GOT to beat rate of fire almost every time.
Now, a shotgun is another story....
Cycloptichorn