Viewing Weapons & Equipment
Weapon & Equipment Information
General Details
Name:  Improved SRM 4
Type (Category):  Weapon (Missile)
Reference:  Interstellar Operations: Alternate Eras (p. 90)

Description:
A marvel of miniaturization, the Clans reduced the weight of their LRM launchers by half and somewhat reduced their bulk. Further improvements would create the familiar Clan LRM, which even eliminated the weapon’s minimum range deficiencies.

Going a different direction, however, were the improved SRMs that appeared a full year before the new LRMs. Utilizing more powerful launch mechanisms, the early Clan weapons-makers increased the SRMs’ effective range by one-third, even though launchers themselves remained about the same weight and size as their original counterparts. Combining this advancement with the more accurate Streak targeting system would eventually consign the improved SRM to obscurity, but not before other manufacturing upgrades enabled the Clans to shrink their standard SRM launchers to half their original weight.

Game Rules:
Improved LRM launchers come in all the same rack sizes as their Inner Sphere equivalents, and maintain the same heat, ranges, per-missile damage, cluster tables, and volley-per-ton values as well. Improved SRM launchers, meanwhile, use the same heat, permissile damage, cluster hits tables, and magazine sizes as their Inner Sphere counterparts—but boast the range brackets of the modern Clan Streak SRM instead.
Unit Type Availability
BattleMechsIndustrialMechsCombat Vehicles
Clan Data (BattleMechs)
Prototype Date:  2815
Production Date:  
Extinction Date:  2831
Recovery Date:  3080

BattleMech Specific Construction Rules
May be mounted on Clan units in accordance with the following construction rules:
 May be mounted with an Artemis Fire Control System

WEAPONS AND EQUIPMENT COMBAT AND CONSTRUCTION TABLE
Heat
Damage (Aero)
Range (Aero)
Rating
Availability
Cost (C-bills)
Weight (Tons)
Criticals
Battle Value
Direct-Fire
Explosive
3
2/Msl (6)
–/4/8/12 (Medium)
F
X-D-X-X
90,000
2
1
52.000

RULES LEVEL PROGRESSION TABLE
Start Year
End Year
Rules Level
2815
2830
Experimental
3080
Experimental

AMMUNITION COMBAT AND CONSTRUCTION TABLE
Type
Rounds
Rating
Availability
Cost (C-bills)
Weight (Tons)
Battle Value
Explosive
Prototype
Production
Extinction
Recovery
Reference
Standard
25
C
X-D-X-X
27,000
1
7.000
2365
2370
TM (p. 229)
Anti-Radiation
25
E
X-X-E-F
81,000
1
9.100
3057
TO:AUE (p. 180)
Artemis IV
25
E
E-F-D-C
54,000
1
7.000
2818
TM (p. 207)
Artemis V
25
F
X-X-F-E
135,000
1
7.000
~3061
3085
TO:AUE (p. 95)
Fragmentation
25
D
E-F-E-D
54,000
1
7.000
~2375
2377
TM (p. 230)
Harpoon
25
C
C-C-C-C
54,000
1
7.000
~2395
2400
TO:AUE (p. 181)
Heat-Seeking
12
C
E-E-E-F
54,000
1
10.500
~2365
2370
TO:AUE (p. 181)
Inferno
25
B
D-D-D-D
13,500
1
7.000
~2370
2380
TM (p. 231)
Narc
25
E
E-F-D-C
54,000
1
7.000
2828
TW (p. 142)
Smoke
25
C
D-D-D-D
40,500
1
7.000
2333
2370
TO:AUE (p. 182)
Tear Gas
25
C
B-B-B-B
40,500
1
7.000
~2370
2375
TO:AUE (p. 184)

ALPHA STRIKE WEAPON CONVERSION TABLE
Heat
Short
Medium
Long
Extreme
Special Abilities
3
0.6/0.6/0.63 *
0.6/0.6/0.63 *
Short-Range Missiles
* The first value indicates the weapon's damage when employed without any Artemis FCS; the second value indicates the weapon's damage when employed with an Artemis IV FCS; the third value indicates the weapon's damage when used with the Artemis V FCS.

Special Unit Abilities
The special unit abilities described here are intended for use with the Alpha Strike rule system:
 Short-Range Missiles (SRM)
This unit mounts a significant number of short-range missile launchers and may fire them together as an alternative weapon attack instead of a standard weapon attack. This ability enables the unit to use alternate SRM ammo for modified effects

MegaMek Output → Weapon List:  Improved SRM 4
MegaMek Output → Critical Slot:  Improved SRM 4
Record Sheet Output → Critical Slot:  Improved SRM 4