With gun legislation in jeopardy in a closely-divided Congress, several states have been moving ahead with gun legislation that in some cases further restricts the size and sale of certain weapons, requires registration of other weapons and parts, and generally makes it more difficult to own and use larger, semi-automatic weapons. Still other states are making it easier to carry weapons into public places.

Legislators have introduced more than 1,300 bills to change state gun laws, according to records kept by the Law Center to Prevent Gun Violence, a San Francisco-based group tracking gun legislation.

Here's a quick review of some of the more notable proposals under consideration in states where gun laws are moving fast, based on state-level news reports and conversations with experts tracking the debate. We'll do our best to update the list as events warrant: