Regardless, the opposition to smart guns has attracted its own champions.

They were synchronized with the rifle sights - making not quite a smart gun but close to it.

The pistol is a computerized "smart gun," designed to fire only for its owner.

Certainly gun makers should be encouraged to continue developing and testing smart guns.

The requirement could be delayed for two more years if the gun industry is unable to develop smart guns by then.

Many types of smart guns have been proposed, each with problems.

"But, if you could get a smart gun to work, it would be one of the most significant developments in the history of firearms."

"People are saying if you can't do something about it, such as smart guns, then let's get rid of it all together."

And they were the first manufacturer to begin developing a type of high-tech product that some call smart guns.

She opened up with the smart gun, and thousands of rounds a minute slammed into the mob.