Shock Rifle

The Shock Rifle, also known as the ASMD in early games, is an energy-based weapon that fires either a hitscan bolt or a core (an "orb" of energy which travels across the map until it strikes a solid mass). In all of the games listed below you can shoot a bolt at a core to cause a "shock combo", a massive explosion which does considerable damage to anything within its blast radius.

Unreal
The ASMD fires a bolt or a core. The core in Unreal was very small, making it hard to hit with a bolt when moving, but this was rewarded by huge amount damage done by a combo - with Damage Amplifier enabled one could inflict 1200+ damage with one shock combo.

Unreal Tournament
The ASMD Shock Rifle fires a bolt or a core.

Unreal Tournament 2003
The Shock Rifle in UT2003 fires a large, fast core on the alt-fire making it difficult to shoot a beam at it and combo it.

Unreal Championship
The Shock Rifle shoots a bolt or a core.

Unreal Tournament 2004
The Shock Rifle fires a bolt or a core. It has a slightly slower orb than in UT2003 making it somewhat easier to create a combo.

Unreal Championship 2
The Shock Rifle fires a bolt or a core.

Unreal Tournament 3
The Shock Rifle fires a bolt or a core.

Related Weapons
Energy Rifle (Shock Lance) - From Unreal 2.