The XM25 Counter Defilade Target Engagement grenade launcher, commonly nicknamed "The Punisher", is a technologically advanced weapon which uses 25x40mm air-burst grenades.
The XM25 was conceived in 2010 as an offshoot of the Objective Individual Combat Weapon program; in 2003, when the XM29 OICW was still being experimented on, it was decided that the XM29 be experimented as two separate platforms instead of one combination weapon, leading to the assault rifle module being developed into the XM8 and the grenade launcher portion being developed into the XM25. However, in 2013, the program for the XM25 received a funding cut, effectively cancelling it. In spite of this, the designers were still optimistic and pushed the fielding date back to 2017. As of August 2016, the Pentagon Inspector General has been urging both Heckler & Koch and Alliant Techsystems on a final decision; whether the XM25 would be fielded or cancelled. A decision has yet to be made.
The grenade launcher has a laser rangefinder which, when used to paint the target, determines the distance to the target, and thus the distance to detonation for the grenade in the chamber. The distance to detonation, once set, can be adjusted about 3 meters. The grenade itself determines how far it has flown by the number of spiral rotations since it has left the bore. The rangefinder can be used to make the XM25 air-burst over a target, hence it's counter defilade prefix.
The weapon fires from a 4-round box magazine.