Sentinel STN-3M
- Type
- BattleMech
- Tech
- Inner Sphere
- Mass
- 40t
- Role
- Striker
- Intro
- 3035 Late Succession War (Renaissance)
- Rules
- Standard
- Cost
- 3.29M C-bills
- Move
- Armor
- 88 pts
Medium LaserUltra AC/5SRM 2
Technical Readout: TR:SW · Record Sheets: RS:SW
Compare this unitBattle Value
758by skill
Point Value
23
Recognition Notes
The Sentinel STN-3M is a 40-ton striker, a 3035 field refit of the 2651-era STN-1S that trades reach for punch. Where the original scout mounted an AC/2 in the left arm, this version carries an Ultra AC/5 in the same location, and the SRM 4 in the right torso is replaced by an SRM 2 alongside a Medium Laser. Cruising and top speed hold at 65 and 97 km/h, and the heat-sink count drops from 12 single to 10 single. Enhanced communications gear carries over from the STN-1S, and the type is built as a field refit at various sites rather than at a single factory.
Armor & Loadout
SENTINEL STN-3M
EnergyBallisticMissile
Head: 9 front
Center Torso: 10 front, 7 rear
Right Torso: 8 front, 5 rear
Left Torso: 8 front, 5 rear
Right Arm: 8 front
Left Arm: 8 front
Right Leg: 10 front
Left Leg: 10 front
| Weapon / Equipment | Loc | Qty | Ammo |
|---|---|---|---|
| MslSRM 2 | RT | 1 | 50 rds · 1 t |
| Enr | RT | 1 | |
| Bal | LA | 1 | 20 rds · 1 t in LT |
Systems & Manufacturers
STN-3M
Sentinel
PV23
TP: BMSZ: 2TMM: 0MV: 12"
ROLE: Striker
Damage
S (+0)
2
M (+2)
2
L (+4)
1
OV: 0Heat scale123S

Critical hits
ENGINE+1 Heat/Firing Weapons
FIRE CONTROL+2 To-Hit Each
MP½ MV Each
WEAPONS-1 Damage Each
Alpha Strike Stats
SkillPVSkill 0 43Skill 1 38Skill 2 33Skill 3 28Skill 4 23Skill 5 21Skill 6 19Skill 7 17Skill 8 15
Availability by era
4 eras · 1 faction
Sentinel variants (11)
STN-1S Role Scout Tech base Inner Sphere Rules Introductory Alpha Strike abilities — Introduced 2651 Battle value 632 Point value 19STN-3L Role Striker Tech base Inner Sphere Rules Standard Alpha Strike abilities — Introduced 2652 Battle value 717 Point value 23STN-3Lb Role Sniper Tech base Inner Sphere Rules Standard Alpha Strike abilities — Introduced 2715 Battle value 1,260 Point value 26STN-3K Role Scout Tech base Inner Sphere Rules Introductory Alpha Strike abilities — Introduced 2830 Battle value 652 Point value 19STN-3KA Role Scout Tech base Inner Sphere Rules Introductory Alpha Strike abilities — Introduced 2830 Battle value 847 Point value 21STN-3KB Role Striker Tech base Inner Sphere Rules Introductory Alpha Strike abilities — Introduced 2830 Battle value 823 Point value 23
STN-3M current variant Role Striker Tech base Inner Sphere Rules Standard Alpha Strike abilities — Introduced 3035 Battle value 758 Point value 23
STN-4D Role Striker Tech base Inner Sphere Rules Standard Alpha Strike abilities CASE Introduced 3063 Battle value 1,179 Point value 24STN-C Role Sniper Tech base Inner Sphere Rules Standard Alpha Strike abilities C3S, MHQ1 Introduced 3065 Battle value 689 Point value 21STN-5WB Role Striker Tech base Inner Sphere Rules Standard Alpha Strike abilities AC1/1/-, CASE Introduced 3070 Battle value 999 Point value 24STN-6S Role Sniper Tech base Mixed Rules Standard Alpha Strike abilities CASEII, IF1 Introduced 3135 Battle value 1,089 Point value 26