Bump Stock

Rick Bowmer / AP

As a nationwide ban took effect this week, gun owners must immediately destroy or turn over their bump stocks after President Trump pushed the Justice Department to classify the controversial gun add-on as a type of illegal machine gun.

Rick Bowmer / AP

Democratic Gov. Tom Wolf is urging Pennsylvania lawmakers to outlaw devices known as bump stocks used in the Las Vegas mass shooting that allow semi-automatic weapons to mimic the rapid fire of an automatic weapon.

Wolf's statement on Tuesday comes on the heels of several lawmakers saying they will introduce legislation to outlaw the devices. Wolf calls them "unnecessary and dangerous."