This is model NSF3 in Irregular's 6mm sci-fi line. link
This is a large (heavy!) grav vehicle (46mm long), roughly arrowhead-shaped, with a "prong" front hull, and an "engine compartment?" slightly detached from the main hull. The turret is relatively small, containing a small-diameter main gun, a coaxial small gun, and a rocket pod.
I thought the decoration on the turret rear looked like it might be a targeting system, so went for Enhanced fire control. There is some faceting to the hull, so I also went with two levels of stealth and Basic ECM. The main gun to me clearly looks like MDC due to the small caliber (and not HVP, due to the short length). So here's what I come up with:
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 4 20 : 0 20 20
Armor class 4 20 : 36 20 36
Fusion Generation Plant 20 : 36 20 58
Anti-Gravity 20 : 36 20 94
1 class 5 MDC in
Full traverse turret 20 : 36 5 144
with Enhanced fire control 20 : 36 5 164
1 GMS/L with Enhanced guidance 20 : 36 3 194
1 APSW 20 : 36 3 194
Basic ECM 20 : 36 3 209
Level 2 stealth 20 : 36 3 369
Alternately, the rocket pod could be a SLAM (but you'll have to downgrade the main gun to make it fit).
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 4 20 : 0 20 20
Armor class 4 20 : 36 20 36
Fusion Generation Plant 20 : 36 20 58
Anti-Gravity 20 : 36 20 94
1 class 4 MDC in
Full traverse turret 20 : 36 8 134
with Enhanced fire control 20 : 36 8 150
1 class 3 SLAM in
Full traverse turret 20 : 36 2 186
1 APSW 20 : 36 2 186
Basic ECM 20 : 36 2 201
Level 2 stealth 20 : 36 2 361
You could also assume the right-side hull markings are doors, downgrade the gun further, and embark some powered infantry…
Equipment Item VSP : BVP Spaces Cost
Vehicle, class 4 20 : 0 20 20
Armor class 4 20 : 36 20 36
Fusion Generation Plant 20 : 36 20 58
Anti-Gravity 20 : 36 20 94
1 class 3 MDC in
Full traverse turret 20 : 36 11 124
with Enhanced fire control 20 : 36 11 136
1 GMS/L with Enhanced guidance 20 : 36 9 166
1 APSW 20 : 36 9 166
Basic ECM 20 : 36 9 181
Level 2 stealth 20 : 36 9 341
Space for 1 unit of
normal powered infantry 20 : 36 1 341
