{
  "id": "m110",
  "name": "M110",
  "aliases": [],
  "domain": "land",
  "country": "USA",
  "category": "203mm self-propelled howitzer",
  "status": null,
  "fielded": 1961,
  "operators": [
    "USA",
    "AZE",
    "BHR",
    "EGY",
    "GRC",
    "IRN",
    "JOR",
    "JPN",
    "KOR",
    "MAR",
    "PAK",
    "TUR"
  ],
  "prolif_count": 11,
  "summary": "The self-propelled M-110 203 mm howitzer first entered service with the US Army in 1963. The vehicle itself transports only two projectiles and five men, while the remainder of the ammunition and the crew is on board a tracked M548.",
  "specs": [
    {
      "k": "",
      "label": "Manufacturer",
      "section": "system",
      "v": "General Motors Corp.",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "crew",
      "v": 5,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Chassis",
      "section": "mobility",
      "v": "same universal tracked chassis as the M107 175 mm self-propelled gun.",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Displacement time",
      "section": "system",
      "v": "1 min",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Emplacement time",
      "section": "system",
      "v": "1 min",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "width_m",
      "v": 3.15,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "combat_weight_t",
      "v": 31.2,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "engine_name",
      "v": "1 x Detroit Diesel 8V-71T Engine",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "engine_hp",
      "v": 805,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "road_range_km",
      "v": 523,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "speed_road_kmh",
      "v": 55,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "speed_xc_kmh",
      "v": 15,
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Fording depth",
      "section": "mobility",
      "v": "1.2 m",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Suspension",
      "section": "mobility",
      "v": "Torsion bar, 5 road wheels, front drive, last road wheel acts as rear idler, shock absorber on each roadwheel, no return rollers ability to lock suspension out when firing rear-mounted hydraulic spade for bracing firing platform.",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Rate of fire (max)",
      "section": "armament",
      "v": "2+ rd/min",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Max elevation",
      "section": "armament",
      "v": "+65 deg",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Min elevation",
      "section": "armament",
      "v": "-2 deg",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Thermal Sight Vehicle Commander",
      "section": "firecontrol",
      "v": "Infrared night-vision equipment",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Thermal Sight Gunner",
      "section": "firecontrol",
      "v": "Infrared night-vision equipment",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "Hull Armor",
      "section": "protection",
      "v": "20-mm maximum (estimated)",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "",
      "label": "NBC Protection",
      "section": "protection",
      "v": "Yes",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "main_armament",
      "v": "M201A1 Howitzer, 203mm Howitzer",
      "src": [
        "weg-m110"
      ],
      "conf": "medium"
    },
    {
      "k": "range_max_km",
      "v": 30,
      "src": [
        "weg-m110"
      ],
      "conf": "medium",
      "label": "Maximum firing range",
      "note": "Longest-range ammunition listed"
    }
  ],
  "payloads": [
    {
      "name": "HERA",
      "role": "203 mm ammunition",
      "src": [
        "weg-m110"
      ],
      "conf": "medium",
      "caps": {
        "Muzzle velocity": "710 m/s",
        "Projectile weight": "90.78 kg",
        "Fuze": "INA"
      },
      "range_km": 30,
      "qty": "2 ea"
    },
    {
      "name": "DPICM",
      "role": "203 mm ammunition",
      "src": [
        "weg-m110"
      ],
      "conf": "medium",
      "caps": {
        "Muzzle velocity": "711 m/s",
        "Projectile weight": "96.6 kig",
        "Fuze": "INA"
      },
      "range_km": 22.5,
      "qty": "2 ea"
    },
    {
      "name": "HE",
      "role": "203 mm ammunition",
      "src": [
        "weg-m110"
      ],
      "conf": "medium",
      "caps": {
        "Muzzle velocity": "713 m/s",
        "Projectile weight": "92.53 kg",
        "Fuze": "INA"
      },
      "range_km": 21.3,
      "qty": "2 ea"
    }
  ],
  "variants": [
    {
      "name": "M110A1",
      "text": "improved variant of the M110, fitted with a longer M201 203 mm/L37 howitzer. It entered service in 1971. Maximum range of fire was increased to 27 km. This self-propelled howitzer fires newly developed rocket-assisted, c",
      "src": [
        "weg-m110"
      ]
    },
    {
      "name": "M110A2",
      "text": "improved variant of the M110A1. It entered service in 1978 and was fitted with double muzzle brake. Maximum range of fire was increased to 29 km.",
      "src": [
        "weg-m110"
      ]
    }
  ],
  "art": "sph",
  "image": null,
  "verified": null,
  "changelog": [
    {
      "date": "2026-10-10",
      "change": "Entry created from the Worldwide Equipment Guide (ODIN), bulk import"
    }
  ],
  "url": "https://www.defensepedia.com/systems/m110.html",
  "sources": {
    "weg-m110": {
      "title": "M110 American 203mm Self-Propelled Howitzer (SPH)",
      "publisher": "U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)",
      "url": "https://odin.t2com.army.mil/WEG/Asset/M110_American_203mm_Self-Propelled_Howitzer",
      "published": "2026-03-20",
      "tier": 1,
      "checked": "2026-10-10"
    }
  }
}