Clinton has been a supporter of gun control during her time in office. She voted for a 10-year extension of the assault weapons ban and voted for requiring extensive background checks at gun shows.

She also supports licensing and registration of handguns, mandatory trigger locks for handguns, holding adults responsible for their children's use of guns, raising the youth handgun ban from age 18 to 21, limiting gun sales to one per month and allowing the Consumer Products Safety Commission regulate guns. Read more about the candidates' positions on guns

Obama, meanwhile, supports extending the assault weapons ban; supports a national law against carrying concealed weapons, with exceptions for retired police and military personnel; and supports limiting gun sales to one per month.

But promises by all the candidates to protect the fundamental right to gun ownership won't impress the gun lobby.

The National Rifle Association gave both Clinton and Obama an "F" on gun policies.

The NRA hardly spared McCain, giving him a C+ in their assessment.

While McCain is occasionally asked about the subject, he remains quiet on specifics -- and rarely talks unprompted about either God or guns on the stump.

The Arizona senator sponsored legislation requiring background checks at gun shows, voted against a 10-year extension of the assault weapons ban and opposed legislation requiring trigger locks for handguns.

McCain also opposed the 1994 crime bill, which contained the assault weapons ban.