Jones said there are still some engineering problems to be sorted out that will make the bullet more practical _ for example, it will have to be tough enough to be dropped off the back of a truck and still work.
"Everybody thought it was too difficult to make things small enough. We knew we could deal with that. The other thing was it was going to be too complicated and expensive," he said. "We came up with an innovative way around that to make it stupid and cheap and still pretty good."