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
If the compressed energy in the core of this weapon was released all at once, the resulting force would be enough to bring down a large building. The comparatively small energy bursts released with each squeeze of the ASMD's trigger are still more than enough to put a world of hurt on most targets.

Lightning-fast burst of focused energy.
 * Primary Fire

Unstable energy projectile, xpands radially. Rumors of a combination attack persist...
 * Scondary Fire

The ASMD fires a bolt or a Tazer Proj (orb projectile). The Tazer Proj 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.

As revealed to the public by David Münnich, T. Elliot Cannon (Myscha the Sled dog) stated in a conversation with him that the name ASMD is derived from a movie phrase saying And Suck My Dick. This is so far thought to be the official explanation of the weapon's name. Some of the other, more funny and less provocative explanations of its name suggest it could also mean Anyone Seen My Dog, Automatic Spectrum Matching Device, Atomic Shock Mechanism Device and many others.

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

Unreal Tournament 2003
The Shock Rifle in UT2003 sports a pretty rapid-fire primary and shoots a large, slow core on the alt-fire, making it easy to shoot but more difficult to properly place for maximum-damage combos.

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

Unreal Tournament 2004
Like UT2003, the Shock Rifle here sports a rapid-fire primary, but the core is slightly smaller and a little quicker, allowing for more effective combos with less work, especially since it's still easy to hit while moving.

Unreal Championship 2
The Shock Rifle fires a bolt or a Shock Proj. The bolt could be frozen in mid-air where more bolts would be added for a bigger, more powerful explosion occurs.

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

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