It's the Sig Sauer M400 enhanced rifle, which comes with a 30-round magazine — double the legal limit in New Jersey. It also has a threaded barrel.
“This is unconscionable to be offering an illegal assault gun made to kill as many people as people, as quickly as possible, in order to get emails to get Gov. Christie to oppose gun control legislation,” said Bryan Miller, executive director of Heeding God’s Call, a faith-based gun control group. http://www.nj.com/politics/index.ssf/2013/07/nj_group_offers_illegal_gun_in_contest_to_lobby_christie.html#incart_m-rpt-1
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