http://www.courant.com/news/opinion/...,4908372.story

Guns defined in state law as assault weapons can no longer be bought or sold in Connecticut. Such guns already held can be legally possessed if registered. But owning an unregistered assault weapon is a Class D felony. Felonies cannot go unenforced.
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But the bottom line is that the state must try to enforce the law. Authorities should use the background check database as a way to find assault weapon purchasers who might not have registered those guns in compliance with the new law.