in case you were wondering:
§ 921(a)(30) The term 'semiautomatic assault weapon'
means:
(D) a semiautomatic shotgun that has at least 2 of -
(i) a folding or telescoping stock;
(ii) a pistol grip that protrudes conspicuously beneath the action of the weapon;
(iii) a fixed magazine capacity in excess of 5 rounds; and
(iv) an ability to accept a detachable magazine.