An airburst grenade.

Many thanks to Dahlberg for the article and vid!

via FMV.

A FMV-employed engineer behind the biggest news in the grenade area since WWI. By jumping up just before brisaden and target fragmentation in a cone towards the ground minimizes the risk of innocent victims, while the grenade is many times more effective against their military objectives.
When an ordinary shrapnel grenade explodes, half of shrapnel into the ground to no value. The other half goes into the air, spreading in all directions and involves unnecessary danger to a third party. Only a few fragments have a chance to give effect to the target, provided that the soldier is not behind a small barrier, then the effect fails completely.
- I started this because I felt that ordinary hand grenades filled its function. They are unnecessarily dangerous for innocent nearby and the largely lacks the ability to reach the goal, says Ian Kinley, technical expert in specialty ammunition at FMV.
Ian Kinleys solution is based instead on the grenade shoots itself up in the air before it explodes.
- Since it shoots up to reach it not only targets behind obstacles. The technology behind the launch means that it knows what is up and down, which allows us to target shrapnel downwards, in an area five meters around the crash site, said Ian Kinley.

You have to love the military.

How do you save lives?  By killing more efficiently!  But this is something new that I never thought I'd see.  Essentially this is an airburst grenade...akin to Bouncy Betty's that the old school Marines dealt with in Vietnam.

Impressive.  Check out the video here.