Mk 47 Striker

The Mk 47 or Striker 40 is a 40mm automatic grenade launcher with an integrated fire control system, capable of launching smart programmable 40mm air burst grenades in addition to various unguided rounds.
In addition to being able to fire all NATO standard high-velocity 40mm rounds like the Mk 19 grenade launcher, it can fire Mk 285 smart grenades that can be programmed to air burst after a set distance. A computerized sight allows the user to set this distance.