The XM25 CDTE (Counter Defilade Target Engagement) is a grenade launcher.
Designed and built by Heckler & Koch and used by the US military in the war in Afghanistan from 2010 to 2013.
It can drop a grenade up to 1000 meters. The user can see his distance from the target using a laser beam and adjust the weapon so that the grenade explodes at a certain distance after the launch.
The weapon is 0.75 meters long, weighs 6.35 kilograms and costs 35,000 US dollars.
[Source: en.wikipedia.org]