Players may make aimed shots against units that are shut down or whose warrior is unconscious, using any weapons other than missile launchers and LB-X autocannons firing cluster munitions. When firing on an immobile 'Mech, the attacking player can make an aimed shot by naming a target location. Against any hit location except the head, the player makes the to-hit roll using the standard -4 to-hit modifier for firing at an immobile target.
If the attack is successful, the player rolls again. On a result of 6, 7 or 8, his shot hits the designated location. For any other result, the player rolls normally on the 'Mech Hit Location Table. (This roll may still result in the attack striking the desired location)
If the attacker is taking an aimed shot at the target 'Mech's head, modify the to-hit number by +3 rather than the normal -4.
If the shot hits, the player rolls 2D6. On a result of 6, 7 or 8, the shot hits the head. For any other result, roll normally on the 'Mech Hit Location Table.
Players cannot use the Aimed Shots rule to make physical attacks.
Targeting Computer: A warrior can use a targeting computer to make an aimed shot against an active target. To make an attack using the targeting computer, follow all standard rules for weapons of that type, but modify the to-hit number for any attacks using the unit's weapon by -1.
The controlling player may use the targeting computer to attempt to attack a specific hit location on an active unit. To do so, an attacking unit ignores the standard -1 to-hit modifier for the targeting computer and uses the Aimed Shots rule, but applies an additional +3 to-hit modifier. The target need not be immobile when using a targeting computer to make such an aimed shot. If the target is not immobile, then
the -4 to-hit modifier for an attack against an immobile target does not apply. An attacker cannot target a 'Mech's head when making an aimed shot with a targeting computer.
If using a targeting computer to make an aimed shot against an immobile target, apply an additional -1 modifier (representing the targeting computer) to the -4 immobile target modifier. All other rules for an aimed shot remain the same.
LB-X Autocannons: When firing cluster munitions, LB-X autocannons lose the benefits of the firing unit's targeting computer. Pulse and Rapid-Fire Weapons: Pulse and rapid-fire weapons may not use a targeting computer to make an aimed shot, unless a rapid-fire weapon is firing a single shot, in which case it can make an aimed shot as described above).