Depends on the Ban. The new State laws being proposed in Washington, Colorado, Minnesota etc. say maybe. Depends on where you want to shoot it, depends on if you comply and pay a fee/tax to own it, depends on if you register it, depends on if you allow LEO to enter your home and search it without a Warrant, depends on if you can find a 7 round mag for it, etc.etc.etc.
In the end, NO, you will not be able to use/shoot it unless you are shooting it to defend the Constitution and Illegal Search and Seizure.