Reply #35: It doesn't make much sense but...

[discntnt_irny_srcsm]

...then the controllers aren't known for making sense.

Semi-automatic rifles able to accept detachable magazines and two or more of the following:
* Folding or telescoping stock
* Pistol grip
* Bayonet mount
* Flash suppressor, or threaded barrel designed to accommodate one
* Grenade launcher (more precisely, a muzzle device which enables the launching or firing of rifle grenades)

Semi-automatic pistols with detachable magazines and two or more of the following:
* Magazine that attaches outside the pistol grip
* Threaded barrel to attach barrel extender, flash suppressor, handgrip, or suppressor
* Barrel shroud that can be used as a hand-hold
* Unloaded weight of 50 oz (1.4 kg) or more
* A semi-automatic version of an automatic firearm

Semi-automatic shotguns with two or more of the following:
* Folding or telescoping stock
* Pistol grip
* Fixed capacity of more than 5 rounds
* Detachable magazine