Grenade Launcher

Introduced in UT2004 for the Onslaught gametype.

Unreal Tournament 2004
''Easily one of the most diverse weapons in current use, the Grenade Launcher can fire up to eight grenades at a time, either seeding an entire area for later detonation, or directly targeting enemies. Lined with electrostatic emitters, each grenade adheres to both enemy vehicles and infantry, the detonation of which lies completely in the hands of the weapon holder. When employed with creativity and timing, the Grenade Launcher can be a very powerful weapon.''

Though, they aren't really grenades in the conventional sense. More like sticky, remote-detonated, projectile mines. One of the most effective weapons against stationary targets, and mobile as well, if wielded correctly.