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Weapons are the bread-and-butter of the war-torn world of Battletech. There are four basic categories, each with its own, distinct traits and features. Range is one of the most important factors in choosing the weapons to outfit your mech with.

Range

The following table shows the effective and max ranges of each of the weapon types. Gray shows sub-optimal range, while white refers to optimal ranges. No color means the weapon cannot be fired at these ranges.

Class Type Range (meters)
30 60 90 120 150 180 210 240 270 300 330 360 390 420 450 480 510 540 570 600 630 660 690 720
Support Support
Small Laser ER
Ballistic Gauss
AC/2
AC/5
AC/10
AC/20
Energy Medium
Medium ER
Large
Large ER
PPC
PPC ER
Missile SRM
LRM

Energy weapons

The simplest weapons are the energy weapons. Energy weapons don’t require any ammunition, but generate a lot of heat and (with the exception of PPCs) inflict very little stability damage. The basic energy weapons are the medium lasers ​and large lasers​, but the real king of this type is the Particle Projector Cannon (PPC)​: huge damage and long range, but also massive heat.

  • Medium and large lasers get a bonus to accuracy over other weapons.
  • The PPC is able to deal a moderate amount of stability damage upon impact.

Ballistic weapons

Ballistic weapons are familiar; they’re similar to modern guns. There are four different classes of autocannon: the AC/2​, the AC/5​, the AC/10​ and the AC/20​. The numbers indicate how powerful the weapon is; the AC/2 does comparatively light damage, but has enormous range, while the AC/20 does absolutely crushing damage (it’s the most damaging weapon in the game!) but has very short range.

  • Ballistic weapons generate less heat, but use ammunition.
  • That ammo can run out or even be damaged by enemy fire and explode, causing additional internal damage to that location on your ‘Mech.
  • All ballistic weapons deal some stability damage relative to their class as well.
  • Ballistic weapons incur a small “Refire Penalty” to their to-hit % when fired multiple turns in a row.

Missile weapons

Missile weapons come in two flavors, long-range missiles (LRM​) and short-range missiles (SRM​). Missile batteries have a number next to them; this tells you how many missiles will fire when you use that weapon. The LRM-10 weapon fires ten long-range missiles; the SRM-2 fires just two short-range missiles. It’s best to think of SRMs as shotguns: a lot of damage delivered up close. LRMs do less damage per-missile, but come in bigger launchers and can fire extremely far.

  • LRMs also can fire at targets that you don’t have a direct line-of-sight (LOS) to, which you’ll recognize by the curved arc shape of the red line of fire.
  • Missiles deal more Stability Damage than the other weapon types do.
  • The larger the size number of a launcher, the faster it chews through ammo.
  • Each missile rolls a separate to-hit chance, so you're more likely to hit with some of the missiles, but not all of them.
    • Hit location is also rolled for each missile separately, so missile damage tends to be spread over the entire target, rather than concentrated on a single location.
    • This makes large salvos of missiles very good at inflicting pilot injuries, since the odds of getting a head hit is rolled for each missile separately.

Support weapons

The final category of weapons comprises support weapons. This includes, the machine gun​, the small laser​, and the flamer​. They have extremely short range and low damage, but they also have a special feature: unlike larger weapons, they can be fired when you melee attack an enemy. If you’re close enough, they can also be fired as normal ranged weaponry.

  • Machine guns are excellent at dealing critical hits to exposed structure.
  • Small lasers deal good raw damage relative to their heat generation.
  • Flamers can decrease the performance of opponents by raising their heat levels.

Full table

Weapon Manufacturer Category Cost (k) Tonnage Slots Damage Stability damage Heat Range min/opt/max (m) Other
AC/2 GM Ballistic 50 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
AC/2 + Defiance Ballistic 90 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
-2 accuracy
AC/2 + Federated Ballistic 60 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
+25% critical
AC/2 + Kali Yama Ballistic 70 6 1 003030 00055 5 0720120 / 480 / 720 1 refire accuracy
AC/2 + Mydron Ballistic 70 6 1 002525 001515 5 0720120 / 480 / 720 1 refire accuracy
AC/2 ++ Defiance Ballistic 130 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
-4 accuracy
AC/2 ++ Federated Ballistic 80 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
+50% critical
AC/2 ++ Imperator Ballistic 100 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
-2 accuracy
+25% critical
AC/2 ++ Kali Yama Ballistic 80 6 1 003535 00055 5 0720120 / 480 / 720 1 refire accuracy
AC/2 ++ Mydron Ballistic 90 6 1 002525 002525 5 0720120 / 480 / 720 1 refire accuracy
AC/2 +++ Imperator Ballistic 150 6 1 002525 00055 5 0720120 / 480 / 720 1 refire accuracy
-4 accuracy
+50% critical
AC/5 GM Ballistic 100 8 2 004545 001010 10 054090 / 360 / 540 1 refire accuracy
AC/5 + Defiance Ballistic 170 8 2 004545 001010 10 054090 / 360 / 540 1 refire accuracy
-2 accuracy
AC/5 + Federated Ballistic 110 8 2 004545 001010 10 054090 / 360 / 540 1 refire accuracy
+25% critical
AC/5 + Imperator Ballistic 120 8 2 004545 002020 10 054090 / 360 / 540 1 refire accuracy
AC/5 + Kali Yama Ballistic 120 8 2 005050 001010 10 054090 / 360 / 540 1 refire accuracy
AC/5 ++ Defiance Ballistic 240 8 2 004545 001010 10 054090 / 360 / 540 1 refire accuracy
-4 accuracy
AC/5 ++ Federated Ballistic 120 8 2 004545 001010 10 054090 / 360 / 540 1 refire accuracy
+50% critical
AC/5 ++ Imperator Ballistic 140 8 2 004545 003030 10 054090 / 360 / 540 1 refire accuracy
AC/5 ++ Kali Yama Ballistic 130 8 2 005555 001010 10 054090 / 360 / 540 1 refire accuracy
AC/5 ++ Mydron Ballistic 190 8 2 004545 002020 10 054090 / 360 / 540 1 refire accuracy
-2 accuracy
AC/5 +++ Mydron Ballistic 270 8 2 004545 003030 10 054090 / 360 / 540 1 refire accuracy
-4 accuracy
AC/10 Western Ballistic 140 12 3 006060 002020 15 04500 / 300 / 450 2 refire accuracy
AC/10 + Defiance Ballistic 230 12 3 006060 002020 15 04500 / 300 / 450 2 refire accuracy
-2 accuracy
AC/10 + Imperator Ballistic 150 12 3 006060 002020 15 04500 / 300 / 450 2 refire accuracy
+25% critical
AC/10 + Kali Yama Ballistic 160 12 3 006565 002020 15 04500 / 300 / 450 2 refire accuracy
AC/10 + Mydron Ballistic 160 12 3 006060 003030 15 04500 / 300 / 450 2 refire accuracy
AC/10 ++ Defiance Ballistic 310 12 3 006060 002020 15 04500 / 300 / 450 2 refire accuracy
-4 accuracy
AC/10 ++ Federated Ballistic 170 12 3 006060 003030 15 04500 / 300 / 450 2 refire accuracy
+25% critical
AC/10 ++ Imperator Ballistic 160 12 3 006060 002020 15 04500 / 300 / 450 2 refire accuracy
+50% critical
AC/10 ++ Kali Yama Ballistic 170 12 3 007070 002020 15 04500 / 300 / 450 2 refire accuracy
AC/10 ++ Mydron Ballistic 180 12 3 006060 004040 15 04500 / 300 / 450 2 refire accuracy
AC/10 +++ Federated Ballistic 190 12 3 006060 004040 15 04500 / 300 / 450 2 refire accuracy
+50% critical
AC/20 Kali Yama Ballistic 180 14 4 0100100 004040 25 02700 / 180 / 270 2 refire accuracy
AC/20 + Defiance Ballistic 270 14 4 0100100 004040 25 02700 / 180 / 270 2 refire accuracy
-2 accuracy
AC/20 + Federated Ballistic 180 14 4 0100100 004040 25 02700 / 180 / 270 2 refire accuracy
+25% critical
AC/20 + Imperator Ballistic 190 14 4 0110110 004040 25 02700 / 180 / 270 2 refire accuracy
AC/20 + Mydron Ballistic 190 14 4 0100100 005050 25 02700 / 180 / 270 2 refire accuracy
AC/20 ++ Defiance Ballistic 370 14 4 0100100 004040 25 02700 / 180 / 270 2 refire accuracy
-4 accuracy
AC/20 ++ Federated Ballistic 190 14 4 0100100 004040 25 02700 / 180 / 270 2 refire accuracy
+50% critical
AC/20 ++ Imperator Ballistic 210 14 4 0120120 004040 25 02700 / 180 / 270 2 refire accuracy
AC/20 ++ Kali Yama Ballistic 200 14 4 0110110 005050 25 02700 / 180 / 270 2 refire accuracy
AC/20 ++ Mydron Ballistic 200 14 4 0100100 006060 25 02700 / 180 / 270 2 refire accuracy
AC/20 +++ Kali Yama Ballistic 230 14 4 0120120 006060 25 02700 / 180 / 270 2 refire accuracy
Gauss Rifle SCI Ballistic 1480 15 5 007575 004040 5 0660180 / 360 / 660 -1 accuracy
M Laser Hellion Energy 60 1 1 002525 00000 10 02700 / 180 / 270 -1 accuracy
M Laser + ExoStar Energy 70 1 1 002525 00000 10 02700 / 180 / 270 -1 accuracy
+25% critical
M Laser + Intek Energy 80 1 1 002525 00000 10 02700 / 180 / 270 -2 accuracy
M Laser + Magna Energy 70 1 1 003030 00000 10 02700 / 180 / 270 -1 accuracy
M Laser ++ Diverse Optics Energy 80 1 1 002525 00000 10 02700 / 180 / 270 -2 accuracy
+25% critical
M Laser ++ ExoStar Energy 70 1 1 002525 00000 10 02700 / 180 / 270 -1 accuracy
+50% critical
M Laser ++ Intek Energy 110 1 1 002525 00000 10 02700 / 180 / 270 -4 accuracy
M Laser ++ Magna Energy 90 1 1 003535 00000 10 02700 / 180 / 270 -1 accuracy
M Laser +++ Diverse Optics Energy 120 1 1 002525 00000 10 02700 / 180 / 270 -4 accuracy
+50% critical
L Laser Krupp Energy 140 5 2 004040 00000 30 04500 / 300 / 450 -1 accuracy
L Laser + Diverse Optics Energy 180 5 2 004040 00000 30 04500 / 300 / 450 -2 accuracy
L Laser + ExoStar Energy 150 5 2 004040 00000 30 04500 / 300 / 450 -1 accuracy
+25% critical
L Laser + Intek Energy 160 5 2 004545 00000 30 04500 / 300 / 450 -1 accuracy
L Laser ++ Diverse Optics Energy 250 5 2 004040 00000 30 04500 / 300 / 450 -4 accuracy
L Laser ++ ExoStar Energy 160 5 2 004040 00000 30 04500 / 300 / 450 -1 accuracy
+50% critical
L Laser ++ Intek Energy 180 5 2 005050 00000 30 04500 / 300 / 450 -1 accuracy
L Laser ++ Magna Energy 200 5 2 004545 00000 30 04500 / 300 / 450 -2 accuracy
L Laser +++ Magna Energy 320 5 2 005050 00000 30 04500 / 300 / 450 -4 accuracy
PPC Magna Energy 180 7 3 005050 002020 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
PPC + Ceres Arms Energy 200 7 3 005050 003535 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
PPC + Donal Energy 190 7 3 005555 002020 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
PPC + Tiegart Energy 270 7 3 005050 002020 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
-2 accuracy
PPC ++ Ceres Arms Energy 230 7 3 005050 005050 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
PPC ++ Donal Energy 210 7 3 006060 002020 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
PPC ++ Tiegart Energy 360 7 3 005050 002020 40 054090 / 360 / 540 Inflicts +1 accuracy debuff
-4 accuracy
ER M Laser SCI Energy 400 1 1 002525 00000 25 03600 / 270 / 360 -1 accuracy
+25% critical
M Pulse SCI Energy 360 2 1 003030 00000 20 02700 / 180 / 270 -2 accuracy
ER L Laser SCI Energy 600 5 2 004040 00000 45 05700 / 330 / 570 -1 accuracy
+25% critical
L Pulse SCI Energy 810 7 2 004545 00000 40 04500 / 300 / 450 -2 accuracy
ER PPC Kong Interstellar Energy 930 7 3 005050 002020 50 06900 / 510 / 690
LRM5 Irian Missile 80 2 1 002020 (4 × 5) 001010 (2 × 5) 6 0630180 / 420 / 630 Indirect fire
LRM5 + Delta Missile 80 2 1 002020 (4 × 5) 001515 (3 × 5) 6 0630180 / 420 / 630 Indirect fire
LRM5 + LongFire Missile 90 2 1 002020 (4 × 5) 001010 (2 × 5) 6 0630180 / 420 / 630 Indirect fire
+25% critical
LRM5 + Telos Missile 90 2 1 002525 (5 × 5) 001010 (2 × 5) 6 0630180 / 420 / 630 Indirect fire
LRM5 ++ Delta Missile 100 2 1 002020 (4 × 5) 002525 (5 × 5) 6 0630180 / 420 / 630 Indirect fire
LRM5 ++ LongFire Missile 100 2 1 002020 (4 × 5) 001010 (2 × 5) 6 0630180 / 420 / 630 Indirect fire
+50% critical
LRM5 ++ Telos Missile 110 2 1 003030 (6 × 5) 001010 (2 × 5) 6 0630180 / 420 / 630 Indirect fire
LRM5 ++ Zeus Missile 100 2 1 002020 (4 × 5) 001515 (3 × 5) 6 0630180 / 420 / 630 Indirect fire
+25% critical
LRM5 +++ Zeus Missile 120 2 1 002020 (4 × 5) 002020 (4 × 5) 6 0630180 / 420 / 630 Indirect fire
+50% critical
LRM10 Jackson Missile 150 5 2 004040 (4 × 10) 002020 (2 × 10) 12 0630180 / 420 / 630 Indirect fire
LRM10 + Delta Missile 160 5 2 004040 (4 × 10) 003030 (3 × 10) 12 0630180 / 420 / 630 Indirect fire
LRM10 + LongFire Missile 160 5 2 004040 (4 × 10) 002020 (2 × 10) 12 0630180 / 420 / 630 Indirect fire
+25% critical
LRM10 + Telos Missile 180 5 2 005050 (5 × 10) 002020 (2 × 10) 12 0630180 / 420 / 630 Indirect fire
LRM10 ++ Delta Missile 200 5 2 004040 (4 × 10) 005050 (5 × 10) 12 0630180 / 420 / 630 Indirect fire
LRM10 ++ LongFire Missile 170 5 2 004040 (4 × 10) 002020 (2 × 10) 12 0630180 / 420 / 630 Indirect fire
+50% critical
LRM10 ++ Telos Missile 200 5 2 006060 (6 × 10) 002020 (2 × 10) 12 0630180 / 420 / 630 Indirect fire
LRM10 ++ Zeus Missile 170 5 2 004040 (4 × 10) 003030 (3 × 10) 12 0630180 / 420 / 630 Indirect fire
+25% critical
LRM10 +++ Zeus Missile 200 5 2 004040 (4 × 10) 004040 (4 × 10) 12 0630180 / 420 / 630 Indirect fire
+50% critical
LRM15 Irian Missile 220 7 3 006060 (4 × 15) 003030 (2 × 15) 15 0630180 / 420 / 630 Indirect fire
LRM15 + Delta Missile 250 7 3 006060 (4 × 15) 004545 (3 × 15) 15 0630180 / 420 / 630 Indirect fire
LRM15 + LongFire Missile 230 7 3 006060 (4 × 15) 003030 (2 × 15) 15 0630180 / 420 / 630 Indirect fire
+25% critical
LRM15 + Telos Missile 260 7 3 007575 (5 × 15) 003030 (2 × 15) 15 0630180 / 420 / 630 Indirect fire
LRM15 ++ Delta Missile 300 7 3 006060 (4 × 15) 007575 (5 × 15) 15 0630180 / 420 / 630 Indirect fire
LRM15 ++ LongFire Missile 240 7 3 006060 (4 × 15) 003030 (2 × 15) 15 0630180 / 420 / 630 Indirect fire
+50% critical
LRM15 ++ Telos Missile 310 7 3 009090 (6 × 15) 003030 (2 × 15) 15 0630180 / 420 / 630 Indirect fire
LRM15 ++ Zeus Missile 260 7 3 006060 (4 × 15) 004545 (3 × 15) 15 0630180 / 420 / 630 Indirect fire
+25% critical
LRM15 +++ Zeus Missile 290 7 3 006060 (4 × 15) 006060 (4 × 15) 15 0630180 / 420 / 630 Indirect fire
+50% critical
LRM20 Jackson Missile 290 10 4 008080 (4 × 20) 004040 (2 × 20) 18 0630180 / 420 / 630 Indirect fire
LRM20 + Delta Missile 320 10 4 008080 (4 × 20) 006060 (3 × 20) 18 0630180 / 420 / 630 Indirect fire
LRM20 + LongFire Missile 300 10 4 008080 (4 × 20) 004040 (2 × 20) 18 0630180 / 420 / 630 Indirect fire
+25% critical
LRM20 + Telos Missile 340 10 4 0100100 (5 × 20) 004040 (2 × 20) 18 0630180 / 420 / 630 Indirect fire
LRM20 ++ Delta Missile 350 10 4 008080 (4 × 20) 008080 (4 × 20) 18 0630180 / 420 / 630 Indirect fire
LRM20 ++ LongFire Missile 310 10 4 008080 (4 × 20) 004040 (2 × 20) 18 0630180 / 420 / 630 Indirect fire
+50% critical
LRM20 ++ Telos Missile 400 10 4 0120120 (6 × 20) 004040 (2 × 20) 18 0630180 / 420 / 630 Indirect fire
LRM20 ++ Zeus Missile 330 10 4 008080 (4 × 20) 006060 (3 × 20) 18 0630180 / 420 / 630 Indirect fire
+25% critical
LRM20 +++ Zeus Missile 370 10 4 008080 (4 × 20) 008080 (4 × 20) 18 0630180 / 420 / 630 Indirect fire
+50% critical
SRM2 Holly Missile 20 1 1 001616 (8 × 2) 00066 (3 × 2) 6 02700 / 180 / 270
SRM2 + Holly Missile 30 1 1 002020 (10 × 2) 00066 (3 × 2) 6 02700 / 180 / 270
SRM2 + Irian Missile 30 1 1 001616 (8 × 2) 00066 (3 × 2) 6 02700 / 180 / 270 +25% critical
SRM2 ++ Holly Missile 40 1 1 002424 (12 × 2) 00066 (3 × 2) 6 02700 / 180 / 270
SRM2 ++ Irian Missile 40 1 1 001616 (8 × 2) 00066 (3 × 2) 6 02700 / 180 / 270 +50% critical
SRM2 ++ Valiant Missile 30 1 1 002020 (10 × 2) 00088 (4 × 2) 6 02700 / 180 / 270
SRM2 +++ Valiant Missile 40 1 1 002424 (12 × 2) 001010 (5 × 2) 6 02700 / 180 / 270
SRM4 TharHes Missile 60 2 1 003232 (8 × 4) 001212 (3 × 4) 8 02700 / 180 / 270
SRM4 + Holly Missile 70 2 1 004040 (10 × 4) 001212 (3 × 4) 8 02700 / 180 / 270
SRM4 + Irian Missile 60 2 1 003232 (8 × 4) 001212 (3 × 4) 8 02700 / 180 / 270 +25% critical
SRM4 ++ Holly Missile 90 2 1 004848 (12 × 4) 001212 (3 × 4) 8 02700 / 180 / 270
SRM4 ++ Irian Missile 70 2 1 003232 (8 × 4) 001212 (3 × 4) 8 02700 / 180 / 270 +50% critical
SRM4 ++ Valiant Missile 80 2 1 004040 (10 × 4) 001616 (4 × 4) 8 02700 / 180 / 270
SRM4 +++ Valiant Missile 90 2 1 004848 (12 × 4) 002020 (5 × 4) 8 02700 / 180 / 270
SRM6 TharHes Missile 90 3 2 004848 (8 × 6) 001818 (3 × 6) 14 02700 / 180 / 270
SRM6 + Holly Missile 140 3 2 006060 (10 × 6) 001818 (3 × 6) 14 02700 / 180 / 270 -1 accuracy
SRM6 + Irian Missile 100 3 2 004848 (8 × 6) 001818 (3 × 6) 14 02700 / 180 / 270 +25% critical
SRM6 ++ Holly Missile 330 3 2 007272 (12 × 6) 001818 (3 × 6) 14 02700 / 180 / 270 -5 accuracy
SRM6 ++ Irian Missile 100 3 2 004848 (8 × 6) 001818 (3 × 6) 14 02700 / 180 / 270 +50% critical
SRM6 ++ Valiant Missile 120 3 2 006060 (10 × 6) 002424 (4 × 6) 14 02700 / 180 / 270
SRM6 +++ Valiant Missile 140 3 2 007272 (12 × 6) 003030 (5 × 6) 14 02700 / 180 / 270
Flamer Skylight Support 20 1 1 00055 00000 0 00900 / 90 / 90 10 heat damage
Flamer + Hotshot Support 30 1 1 001010 00000 0 00900 / 90 / 90 10 heat damage
Flamer ++ Olympus Support 30 1 1 00055 00000 0 00900 / 90 / 90 15 heat damage
S Laser Martell Support 20 0.5 1 002020 00000 5 00900 / 90 / 90 -1 accuracy
S Laser + Diverse Optics Support 30 0.5 1 002020 00000 5 00900 / 90 / 90 -2 accuracy
S Laser + ExoStar Support 30 0.5 1 002020 00000 5 00900 / 90 / 90 -1 accuracy
+25% critical
S Laser + Magna Support 30 0.5 1 002525 00000 5 00900 / 90 / 90 -1 accuracy
S Laser ++ Diverse Optics Support 40 0.5 1 002020 00000 5 00900 / 90 / 90 -4 accuracy
S Laser ++ ExoStar Support 30 0.5 1 002020 00000 5 00900 / 90 / 90 -1 accuracy
+50% critical
S Laser ++ Intek Support 30 0.5 1 002525 00000 5 00900 / 90 / 90 -1 accuracy
+25% critical
S Laser ++ Magna Support 40 0.5 1 003030 00000 5 00900 / 90 / 90 -1 accuracy
S Laser +++ Intek Support 40 0.5 1 003030 00000 5 00900 / 90 / 90 -1 accuracy
+50% critical
MG Sperry Browning Support 10 0.5 1 001515 (3 × 5) 00000 (0 × 5) 0 00900 / 90 / 90 +50% critical
ER S Laser SCI Support 210 0.5 1 002020 00000 15 01500 / 150 / 150 -1 accuracy
+25% critical
S Pulse SCI Support 140 1 1 002525 00000 10 00900 / 90 / 90 -2 accuracy
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