T56 GMC
Tank ID 6433
Vehicle description
Wargaming Tankopedia
Development of a 3 inch self-propelled gun on the M3A3 Stuart chassis started in September 1942. Trials on the Aberdeen Proving Ground in November demonstrated that the gun was too heavy for the light tank chassis. Never entered mass production.
Description from the Wargaming Tankopedia · Language selected automatically
Technical profile
Standard configuration
Hit points
285
Weight
15.0 t
Forward speed
50 km/h
Reverse speed
14 km/h
View range
290 m
Signal range
325 m
Armour
| Front | Sides | Rear | |
|---|---|---|---|
| Hull | 38 | 25 | 13 |
| Turret | – | – | – |
Engine: Continental W-670 · 262 hp
Radio: SCR 510
Armament
Standard gun and ammunition
3-inch AT Gun M7
Shell types
Penetration 76 / 101 / 126 mm
Penetration 118 / 157 / 196 mm
Penetration 29 / 38 / 48 mm
Marks of Excellence
Damage thresholds
Combined Damage (Damage + Assist + Tracking)
Approximation based on WN8 expected values — not an official Wargaming figure.
WN8 Expected Values
XVM reference
XVM Expected Values for WN8 calculation (per battle)
Community stats
Measured, not estimated
Average across every profile stored on WG-Watch — real battles instead of expected values.
Win rate
51.56 %
Avg. WN8
699
Battles
9,945
As of Aug 31, 2026
Rank 36 of 64 at Tier III
Best players on this tank
By WN8
From the stored profiles, minimum 50 battles on this vehicle. Updated daily.
| # | Player | WN8 | Battles | Win rate |
|---|---|---|---|---|
| 1 | m00h eu | 4,382 | 154 | 72.08 % |
| 2 | RedHagen eu | 3,336 | 137 | 63.50 % |
| 3 | Panzerfighter_ eu | 3,015 | 161 | 70.19 % |
| 4 | Eumelmad eu | 1,696 | 139 | 59.71 % |
| 5 | WhiteScar eu | 1,695 | 73 | 56.16 % |
| 6 | WelleErdball23 eu | 1,693 | 368 | 58.15 % |
| 7 | skill4ltu eu | 1,567 | 136 | 59.56 % |
| 8 | hall0s_Smurf eu | 1,341 | 230 | 57.39 % |
| 9 | H0bg0bl1n eu | 1,079 | 107 | 53.27 % |
| 10 | Papawurstkaese eu | 1,071 | 60 | 60.00 % |
