Looking forward into the future of weapons, most countries these days are prioritizing on defending themselves electronically. It’s safe to say underwater warfare has been bumped a few spots down on the list of possible battles. Regardless, Russia has continued to develop its aquatic arsenal, and yesterday unveiled what it says is the first “amphibian” assault rifle—a gun that can effectively shoot at a rate of 800 shots per minute on both land or underwater.

Russia’s latest invention in weapons technology is the ADS assault rifle. It was manufactured by the state KBP design bureau and presented to the public yesterday at an arms exhibition in Moscow. Soon, Russian Special Forces units will be armed with the hybrid weapon. For no other reason than it is entirely badass, and in the off chance that their army will be fighting a school of pissed of mermaids.

The obvious first question is, when are we going to need this?

The reality is, many armies have had underwater firearms since the Cold War, when they  developed “frogmen”—combat divers that carried out stealth missions underwater. Those aquatic guns would fire steel darts instead of standard bullets in order to to cut through the water. And since the barrels weren’t rifled, they weren’t very accurate when fired on land, rendering the bulky weapon useless as soon as a frogman returned to the surface.

This new frogman weapon is designed to fire 5.45-mm cartridges with a similar accuracy to a AK-74. It’s simple to toggle between water and air mode, though soldiers do have to reload the weapon with underwater-friendly ammunition before submerging.