| Ordnance RML 2.5-inch mountain gun | |
|---|---|
 Sikh gunners assembling the gun, circa. 1895 | |
| Type | Mountain gun |
| Place of origin | United Kingdom |
| Service history | |
| In service | 1879–1918 |
| Used by | British Empire British Raj Romania |
| Wars | Second Boer War World War I |
| Production history | |
| Designer | Colonel le Mesurier, RA |
| Designed | 1877 |
| Manufacturer | Royal Gun Factory |
| Specifications | |
| Mass | 800 pounds (363 kg) total |
| Length | 69 inches (1,750 mm) |
| Barrel length | 66 inches (1,680 mm) |
| Shell | 7 pounds 6 ounces (3.35 kg) (Shrapnel) 8 pounds 2 ounces (3.69 kg) (Ring)[1] |
| Calibre | 2.5 inches (63.5 mm) |
| Action | RML |
| Muzzle velocity | 1,436 feet per second (438 m/s) |
| Maximum firing range | 3,300 yards (3,018 m) (shrapnel) 4,000 yards (3,658 m) (ring)[1] |
The Ordnance RML 2.5-inch mountain gun was a British rifled muzzle-loading mountain gun of the late 19th century designed to be broken down into four loads for carrying by man or mule. It was primarily used by the Indian Army.