There is a comment thread associated with this Cheaperthandirt link. It is absolutely hilarious. Unfortunately, the comments are closed for the moment. The issue being discussed is the use of the word "shotty" when comparing this weapon to a sawed-off shotgun, which is illegal under 18", for home defense. If I were able to leave a comment, I would have to come down on the side of typo, which has not been profferd for discussion. I think the author meant to type "shorty" since the "r" and "t" keys are adjacent to each other.
This is, of course, my interpretation based solely on empirical data which suggests the apparent unwillingness of everyone to PROOFREAD before posting. If carpenters built buildings like programmers wrote code, one woodpecker could destroy civilization.