| Year | 1918 |
| Weapon Type | Heavy Gun |
| Origin & Designer | France/Filloux |
| Numbers Produced | 24 |
| Crew | 10 |
| Calibre | 155mm |
| Elevation | 0° to +39° |
| Traverse | 60° |
| Breech | Interrupted Screw |
| Recoil | Hydropneumatic |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Split Trail |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | 5.915mm (L/38.2) |
| Overall Length | [@length] |
| Width | [@width] |
| Height | [@height] |
| Weight | Weight in Traction: 11.250 kg Weight in Action: 11.000 kg |
| Round Weight | 44.85 kg (HE Bagged Charge) |
| Muzzle Velocity | 717 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 3 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | 12.100m |
| Armour Penetration | [@armour_penetration] |
| Traction | Motorised (Laffly S35T Truck) |
| Variants | [@variants] |
| Notes | The GPFT was a modernised version of the GPF which was mounted on a different carriage designed by Touzard. |