The QF 4 inch Mk V gun was a Royal Navy gun of World War I which was adapted on HA mountings to the heavy anti-aircraft role both at sea and on land, and was also used as a coast defence gun.
QF 4 inch HA guns aboard the cruiser HMAS Sydney, 1939–1940
LA (Low Angle) gun and crew on HMS Galatea, February 1917
LA (Low Angle) gun on HMAS Vampire firing circa 1938
Crew storing fixed rounds on the Kingfisher class sloop HMS Widgeon, August 1943
Glossary of British ordnance terms
This article explains terms used for the British Armed Forces' ordnance (weapons) and ammunition. The terms may have different meanings depending on its usage in another country's military.
Breech mechanism of BL 9.2-inch howitzer Mk II, showing position of obturating pad at far right
2 C.R.H. BL 9.2-inch howitzer shell, 1916. See "18.4 R" pointing to curve of nose
3 C.R.H. QF 4.5-inch howitzer shell, 1916. See "13.5 R" pointing to curve of nose
Cartridge in cloth bag consisting of 108 lb cordite SC 280 ¼ charge for BL 15-inch naval gun, WWII. Four of these cartridges were loaded together to make up the full service charge.