I really dig the Prowler. I don't dig that it's 55 tons, and won't fit in a light vehicle bay. So, here's an attempt to fix that.
Since I was going for Dark Age/ilClan era, I went ahead and switched to MMLs and ERMLs for the main weapons, with machine guns taking the place of the SRMs. CASE, as always, seemed like a good idea. Thanks to the lighter turret, I was able to squeeze in another half-ton of cargo. For multi-terrain, I combined full environmental sealing with partial amphibious capability - it may not be as good in the water, but it can handle both airless/toxic conditions and still function in the water to some degree.
For a more conventional Prowler loadout, drop the MML-3s for two LRM-5s with a ton of ammo and reduce the cargo by 0.5 ton, back to 4 tons for infantry and 0.5 ton general. In the Succession Wars era, do that, then drop the Beagle probe and CASE for another two tons of cargo.
Prowler Multi-Terrain Vehicle (Lightweight)
Mass: 50 tons
Movement Type: Tracked
Power Plant: Nissan 200
Cruising Speed: 43.2 kph
Maximum Speed: 64.8 kph
Armor: J-Seal Standard
Armament:
2 ER Medium Laser
2 Machine Gun
2 MML 3
Manufacturer: Varies
Primary Factory: Various
Communication System: Wonder-Talk IV
Targeting & Tracking System: J-Peep Farsight with Active Probe
Introduction Year: 3150
Tech Rating/Availability: E/X-X-X-D
Cost: 2,629,063 C-bills
Type: Prowler Multi-Terrain Vehicle
Technology Base: Inner Sphere (Standard)
Movement Type: Tracked
Tonnage: 50
Battle Value: 684
Equipment Mass
Internal Structure 5
Engine 200 Fusion 13
Cruising MP: 4
Flank MP: 6
Heat Sinks: 10 0
Control Equipment: 2.5
Power Amplifier: 0.0
Turret: 0.5
Armor Factor 112 7
Internal Armor
Structure Value
Front 5 25
R/L Side 5/5 23/23
Rear 5 18
Turret 5 23
Weapons
and Ammo Location Tonnage
Active Probe Front 1.5
2 Machine Gun Front 1.0
CASE Body 0.5
MML 3 SRM Ammo (33) Body 1.0
Environmental Sealing BD 5.0
MML 3 LRM Ammo (40) Body 1.0
Combat Vehicle Chassis Mod Body 2.0
2 MML 3 Turret 3.0
2 ER Medium Laser Turret 2.0
Infantry Body 4.0
Cargo Body 1.0