The Navy is developing an electromagnetic rail gun that uses electricity, not gunpowder or fuel, for long-range strikes.
The railgun will test a prototype from a sea vessel in 2016, the Navy said Monday.
The gun uses 23-pound projectiles that travel at seven times the speed of sound, Reuters reports.
The projectiles have a longer range than any other Navy weapon, able to hit a target 110 nautical miles (about 127 land miles) away, according to the service.
""It's now reality, and it's not science fiction," said Rear Adm. Matthew Klunder, chief of Naval Research, according to Reuters.
The railgun, the Navy says, will be more cost-effective than missiles. Each shot with the railgun costs $25,000 vs. $500,000 to $1.5 million, Reuters reports.
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