| Year | 1917 |
| Weapon Type | Heavy Howitzer |
| Origin & Designer | Sweden/GM |
| Numbers Produced | 4 |
| Crew | 10 |
| Calibre | 149.1mm (150x225) |
| Elevation | -0° to +41° |
| Traverse | 6° |
| Breech | Horizontal Sliding Wedge |
| Recoil | Hydropneumatic |
| Gun Sight | [@gun_sight] |
| Gun Mount | [@gun_mounts] |
| Carriage | Box Trail |
| Trailers | [@trailers] |
| Gun Shield | [@gun_shield] |
| Armoured Plate | [@armoured_plate] |
| Barrel Length | L/15 |
| Overall Length | [@length] |
| Width | [@width] |
| Height | [@height] |
| Weight | Weight in Traction: 4.565kg Weight in Action: 4.065kg |
| Round Weight | 38.5 kg |
| Muzzle Velocity | 435 m/s |
| Feed | [@feed] |
| Magazine Capacity | [@magazine_capacity] |
| Practical Rate of Fire | [@practical_rate_of_fire] |
| Rate of Fire | 4 r.p.m. |
| Maximum Rate of Fire | [@maximum_rate_of_fire] |
| Maximum Ceiling | [@maximum_ceiling] |
| Maximum Ground Range | [@maximum_ground_range] |
| Maximum Range | 10.800m |
| Armour Penetration | [@armour_penetration] |
| Traction | Horse Drawn or Motorised |
| Variants | [@variants] |
| Notes | Heavy howitzer used by Corps artillery batteries. |