This only allows the criminals to have more than a few shots.
Check it out:

A federal judge on Tuesday upheld a Maryland ban on 45 assault weapons and a limit on gun magazines to 10 rounds, two key parts of a sweeping gun-control law that were challenged shortly before the law went into effect last year.

Maryland lawmakers approved the measure in response to the December 2012 shootings at Sandy Hook Elementary School in Newtown, Connecticut, that killed 20 children and six educators.

U.S. District Judge Catherine Blake concluded in a 47-page ruling that the law serves the government’s interest in protecting public safety without significantly burdening what the Supreme Court has explained is the core Second Amendment right of “law abiding, responsible citizens to use arms in defense of hearth and home.”