James Holmes, the accused shooter in the movie theater massacre, bought his arsenal legally, and he apparently bought at least some of the ammunition online. Now there are calls to restrict such sales.

Nathan Schauermann and his sister-in-law Kimberly Clark expect they'll go through a few hundred rounds as Clark gets back into shooting. She wants a gun for protection.

I'm a single mother with a 9-year-old daughter. I live in a good area, but it doesn't matter, she said.

And on Monday morning, they were talking about the Colorado massacre, and Internet ammunition sales. Schauermann thinks ammo should be bought in a store.

There are laws regarding age. And you don't want kids ordering the stuff on line, he said.

You cannot legally buy a gun in the U.S. legally unless you have face to face contact with the seller. Even when a store like Wade's guns in Bellevue sells to another person in another state, that gun has to go through another dealer who will do the background check. Wade s does not sell ammunition on line.

But there are other retailers who do - some are big names in the sporting goods business like Cabella s. Some, like Surplus Ammo near Ft. Lewis, are independent.

All attempt to place restrictions on who can receive the ammo and won't send it to places where sales are against state laws.

But there's not a lot you can do with ammo if you don't have a gun to fire it.

James Holmes passed four background checks to buy his guns, but authorities say he appeared to buy a lot of his ammo on line - 6000 rounds.

This weekend there were calls for more gun controls.

Members of Congress across this country should not be afraid of the NRA or the and should be standing up saying we're going to do something. You still have a right to own a gun, said. Rep. Carolyn McCarthy. (D) New York

You don't have gun shops like Wades everywhere on the map, particularly in the West where you might have somebody who lives 50 miles out of town, it's typically a good way to stock up on ammunition for a season, said Dave Workman of the Second Amendment Foundation.

Police suspect Holmes had ordered his ammunition from various sources. But while 6000 rounds sounds large to many people, gun owners say buying thousands of rounds at a time is not unusual. If anything, gun store owners say efforts to restrict sales further could trigger a rush to buy even more ammo.

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