This model is from Iron Wind Metals, part of the BattleTech range: link
This vehicle is described as a hovercraft, though it doesn't have the usual skirt, and has six thrusters on the underside plus a large intake/thruster (?) at the rear.
This is a five-part model (plus a top-shaped "hover" stand): hull, turret, two fins, and a ball-shaped forward structure (cockpit?). In each pack of two models, there are four optional turrets: large missiles, small missiles, lasers, and gun. There are some opening on the front hull that could also be weapons ports.
According to the fluff, this is a fusion-engined hover vehicle with a default configuration of three lasers (turret), missiles (front hull) and machinegun, plus room for troops. It also has a StarLink communications system, which I figure means improved targeting systems.
To my eye, this model is borderline – a large "medium" or a small "large." My take on this version:
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 3 15 : 0 15 15
Armor class 3 15 : 24 15 24
Fusion Generation Plant 15 : 24 15 38
Fast GEV 15 : 24 15 52
1 class 3 HEL in
Full traverse turret 15 : 24 6 88
with Enhanced fire control 15 : 24 6 100
1 GMS/L with Enhanced guidance 15 : 24 4 130
1 APSW 15 : 24 4 130
Space for 1 unit of
normal infantry 15 : 24 0 130
To fit everything, I had to treat the three lasers as if they were one weapon.
The next variant replaces the laser turret with a gun turret (BT's PPC or Particle Projector Cannon):
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 3 15 : 0 15 15
Armor class 3 15 : 24 15 24
Fusion Generation Plant 15 : 24 15 38
Fast GEV 15 : 24 15 52
1 class 3 DFFG in
Full traverse turret 15 : 24 6 97
with Enhanced fire control 15 : 24 6 109
1 GMS/L with Enhanced guidance 15 : 24 4 139
1 APSW 15 : 24 4 139
Space for 1 unit of
normal infantry 15 : 24 0 139
The next three variations carry different missile turrets (SRM-4, SRM-6, LRM-10). I simply them as:
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 3 15 : 0 15 15
Armor class 3 15 : 24 15 24
Fusion Generation Plant 15 : 24 15 38
Fast GEV 15 : 24 15 52
1 class 3 SLAM in
Full traverse turret 15 : 24 6 88
with Enhanced fire control 15 : 24 6 100
1 GMS/L with Enhanced guidance 15 : 24 4 130
1 APSW 15 : 24 4 130
Space for 1 unit of
normal infantry 15 : 24 0 130
The fluff also has two variants sporting all-energy weapons, which could be modeled by covering up two of the openings in the laser turret:
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 3 15 : 0 15 15
Armor class 3 15 : 24 15 24
Fusion Generation Plant 15 : 24 15 38
Fast GEV 15 : 24 15 52
1 class 3 HEL in
Full traverse turret 15 : 24 6 88
with Enhanced fire control 15 : 24 6 100
1 class 1 HEL in Fixed mount 15 : 24 4 112
1 APSW 15 : 24 4 112
Space for 1 unit of
normal infantry 15 : 24 0 112
And there's a variant that carries more troops, but less weapons. My version:
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 3 15 : 0 15 15
Armor class 3 15 : 24 15 24
Fusion Generation Plant 15 : 24 15 38
Fast GEV 15 : 24 15 52
1 class 1 HEL in
Full traverse turret 15 : 24 12 64
with Enhanced fire control 15 : 24 12 68
1 GMS/L with Enhanced guidance 15 : 24 10 98
1 APSW 15 : 24 10 98
Space for 1 unit of
normal powered infantry 15 : 24 2 98