the big brother of the Fast tank I posted earlier. it has a very different look than it's lighter sibling. as soon as the new rules are complete i will be stating this one out as well..although I may have to tweak it a bit between now and then 
as usual feedback suggestions commentary is always welcome.
Built for head to head combat against other armored vehicles the MBT sacrifices raw speed, and agility to add armor and heavier weapons. It is one of the heaviest most lethal weapon systems available to the average military.
Crew:
Pilot
Commander
Gunner
Systems Operator/Vehicle Engineer
Armament:
Main Gun: 40mm hyper-velocity mag-rail
Secondary weapons:
4 Very Heavy multi-role guided munitions
16 Hyper-velocity anti-tank missiles.
co-axial mounted 7.5mm VRF guass machinegun
12.5 mm VRF guass machine-gun.( cupola mount)
Man portable plasma gun( vehicle mount version)( cupola mount)
Smoke/chaff/grenade ejectors
Skirt mounted anti-infantry fragmentation charges
Power source: Fusion
Max Speed: low subsonic
Max altitude: Unlimited
Endurance: one week(limited by life support 48 Hours)
Armor:
Main:layered composite armor reinforced with bonded superdense alloys.
Additional: Spaced armor skirts, with reactive armor packets.
Defensive systems
ECM/Jammers/decoy system
Hull mounted laser dazzlers
Hull mounted dynamic optic camouflage system
Hull mounted cooling and thermal deception panels.
Sensors:
Hull mounted
Phased array artificial aperture radar
Laser detection array
Hull Integrated multi-spectrum optics.
Hull Integrated IR/UV illumination panels
Communications:
Broad band,encrypted, frequency hopping pulse transmitters.
Data network integration systems
Satellite communications system
Real time vehicle to vehicle data/visual/audio link
satellite navigation and positioning system
Remote targeting fire control network.
Additional systems:
micro drone communications and control system
4 drones in rear deck cells
Pressure/vacuum/hazardous environment seals
NBC Seals
Radiation shielding
Extended life support ( 48 hours)
Water/moisture seals
Internal Spall liner
fire suppression systems
chemical power cell Auxiliary Power Unit: allows only basic low noise/low emissions maneuver and recovery operations
The MBT has heavier armor, and a more rugged chassis to survive hits that would reduce lighter tanks, and armored vehicles to burning wrecks. It's heavy gun is designed to engage rapidly maneuvering armor at long range, with devastating firepower. while secondary self defense weapons allow for close range point defense, and ant-infantry fire when engaged at close range. These features make the MBT the iron fist of any military.
Though it lacks the ability and rapid movement abilities of gunships and fast tanks/AFVs the Main Battle tank is still highly mobile and can strike with great speed from both orbit and ground based positions. To survive in a high threat environment the MBT has many of the same systems deployed on scouts, and other vehicles, to evade, and defeat enemy detection and targeting systems.While the more agile vehicles have greater tactical, and strategic mobility, the MBT is unmatched in it's raw firepower, and armor protection.
Deployed in squads, platoons and companies the MBT forms the core of a heavy armored formation, with attached light armor, and armored cavalry/Infantry,air support, and artillery units to form an effective combined arms force. Few all MBT forces larger than companies are formed. Due to the expense, complexity, and intense maintenance needs of an MBT unit.In general battalions, regiments, are almost always mixed force formations.
In action the MBT often moves flanked by lighter units, with scouts and gunships searching for hostile forces. Once detected the MBT units converge and execute either a high speed impromptu, or hasty assaults against unprepared and dispersed forces.Or more commonly a deliberate attack against fixed, and prepared enemies. In very few cases will a MBT unit attack other MBT force without a deliberate plan of action. Only when the enemy is caught completely by surprise, or other tactical considerations are considered will an MBT engage a heavy force at speed, without a coordinated movement and engagement plan.
The MBTs main gun is optimized for anti-armor fire, it provides no real effective bombardment, or fire support ability to the vehicle. its high velocty small diamet gun will blast through most structures, and completely pass through thin skinned vehicles, but will not generate much in the way of concussion, or fragmentation. For such work other more specialized vehicles will move into position to provide support fire, while the MBT provides an overwatch against enemy armor, and anti-vehicle assets. In cases where rapid fire support is needed the MBT can use it's heavy multi-purpose munitions to fire on structures, or in airbusrt mode engage infantry and light vehicles.In addition it's secondary guns can provide effective fire support in limited conditions. The use of an MBT as infantry support is considered a waste of resources by most commanders,who use it as such with hesitation.
The MBT can execute orbit to surface assaults with some degree of surprise. the sudden appearance of a vehicle which can ignore light vehicle mounted missiles and anti-aircraft fire overwhelms most ground defenses easily. when weapons that can deal significant damage to an MBT are deployed hey are more likely to be tasked with engaging assault transport, landing ships, and other light starships used for planetary assault. This has made the frequency of direct orbit to surface armor strikes higher, and gives some degree of safety to lighter forces that may otherwise be forced to deal with local armored defenders with only hand held or light vehicle mounted anti-tank weapons.
Notes:
the slighty smaller vehicle next the bottom image is a fast Grav tank. http://wbyrd.deviantart.com/art/LgKz-124-Shrike-Gravitic-Armored-Fighting-Vehicle-567811564
the smaller vehicle is roughly the same size as an M-1 Abrams but has a much lower profile, the extra size of the MBT is mostly in hieght to allow for more armor, and ammunition storage.
the model is created in sections, although the missile pods are fixed...the upper turret is made so that I can rotate it, raise and lower the guns etc. to my surprise the model is also suitable for 3d printing without any extra clean, up or repair work to create a usable model...with the exception of the cupola which has to be one piece for printing so the guns are fixed ....not a major problem if you want to use the model as a piece for a mintures war game, or RPG session....

as usual feedback suggestions commentary is always welcome.

Built for head to head combat against other armored vehicles the MBT sacrifices raw speed, and agility to add armor and heavier weapons. It is one of the heaviest most lethal weapon systems available to the average military.
Crew:
Pilot
Commander
Gunner
Systems Operator/Vehicle Engineer
Armament:
Main Gun: 40mm hyper-velocity mag-rail
Secondary weapons:
4 Very Heavy multi-role guided munitions
16 Hyper-velocity anti-tank missiles.
co-axial mounted 7.5mm VRF guass machinegun
12.5 mm VRF guass machine-gun.( cupola mount)
Man portable plasma gun( vehicle mount version)( cupola mount)
Smoke/chaff/grenade ejectors
Skirt mounted anti-infantry fragmentation charges
Power source: Fusion
Max Speed: low subsonic
Max altitude: Unlimited
Endurance: one week(limited by life support 48 Hours)
Armor:
Main:layered composite armor reinforced with bonded superdense alloys.
Additional: Spaced armor skirts, with reactive armor packets.
Defensive systems
ECM/Jammers/decoy system
Hull mounted laser dazzlers
Hull mounted dynamic optic camouflage system
Hull mounted cooling and thermal deception panels.
Sensors:
Hull mounted
Phased array artificial aperture radar
Laser detection array
Hull Integrated multi-spectrum optics.
Hull Integrated IR/UV illumination panels
Communications:
Broad band,encrypted, frequency hopping pulse transmitters.
Data network integration systems
Satellite communications system
Real time vehicle to vehicle data/visual/audio link
satellite navigation and positioning system
Remote targeting fire control network.
Additional systems:
micro drone communications and control system
4 drones in rear deck cells
Pressure/vacuum/hazardous environment seals
NBC Seals
Radiation shielding
Extended life support ( 48 hours)
Water/moisture seals
Internal Spall liner
fire suppression systems
chemical power cell Auxiliary Power Unit: allows only basic low noise/low emissions maneuver and recovery operations
The MBT has heavier armor, and a more rugged chassis to survive hits that would reduce lighter tanks, and armored vehicles to burning wrecks. It's heavy gun is designed to engage rapidly maneuvering armor at long range, with devastating firepower. while secondary self defense weapons allow for close range point defense, and ant-infantry fire when engaged at close range. These features make the MBT the iron fist of any military.
Though it lacks the ability and rapid movement abilities of gunships and fast tanks/AFVs the Main Battle tank is still highly mobile and can strike with great speed from both orbit and ground based positions. To survive in a high threat environment the MBT has many of the same systems deployed on scouts, and other vehicles, to evade, and defeat enemy detection and targeting systems.While the more agile vehicles have greater tactical, and strategic mobility, the MBT is unmatched in it's raw firepower, and armor protection.
Deployed in squads, platoons and companies the MBT forms the core of a heavy armored formation, with attached light armor, and armored cavalry/Infantry,air support, and artillery units to form an effective combined arms force. Few all MBT forces larger than companies are formed. Due to the expense, complexity, and intense maintenance needs of an MBT unit.In general battalions, regiments, are almost always mixed force formations.
In action the MBT often moves flanked by lighter units, with scouts and gunships searching for hostile forces. Once detected the MBT units converge and execute either a high speed impromptu, or hasty assaults against unprepared and dispersed forces.Or more commonly a deliberate attack against fixed, and prepared enemies. In very few cases will a MBT unit attack other MBT force without a deliberate plan of action. Only when the enemy is caught completely by surprise, or other tactical considerations are considered will an MBT engage a heavy force at speed, without a coordinated movement and engagement plan.
The MBTs main gun is optimized for anti-armor fire, it provides no real effective bombardment, or fire support ability to the vehicle. its high velocty small diamet gun will blast through most structures, and completely pass through thin skinned vehicles, but will not generate much in the way of concussion, or fragmentation. For such work other more specialized vehicles will move into position to provide support fire, while the MBT provides an overwatch against enemy armor, and anti-vehicle assets. In cases where rapid fire support is needed the MBT can use it's heavy multi-purpose munitions to fire on structures, or in airbusrt mode engage infantry and light vehicles.In addition it's secondary guns can provide effective fire support in limited conditions. The use of an MBT as infantry support is considered a waste of resources by most commanders,who use it as such with hesitation.
The MBT can execute orbit to surface assaults with some degree of surprise. the sudden appearance of a vehicle which can ignore light vehicle mounted missiles and anti-aircraft fire overwhelms most ground defenses easily. when weapons that can deal significant damage to an MBT are deployed hey are more likely to be tasked with engaging assault transport, landing ships, and other light starships used for planetary assault. This has made the frequency of direct orbit to surface armor strikes higher, and gives some degree of safety to lighter forces that may otherwise be forced to deal with local armored defenders with only hand held or light vehicle mounted anti-tank weapons.
Notes:
the slighty smaller vehicle next the bottom image is a fast Grav tank. http://wbyrd.deviantart.com/art/LgKz-124-Shrike-Gravitic-Armored-Fighting-Vehicle-567811564
the smaller vehicle is roughly the same size as an M-1 Abrams but has a much lower profile, the extra size of the MBT is mostly in hieght to allow for more armor, and ammunition storage.
the model is created in sections, although the missile pods are fixed...the upper turret is made so that I can rotate it, raise and lower the guns etc. to my surprise the model is also suitable for 3d printing without any extra clean, up or repair work to create a usable model...with the exception of the cupola which has to be one piece for printing so the guns are fixed ....not a major problem if you want to use the model as a piece for a mintures war game, or RPG session....