ORDNANCE ML 4.2in Mk.I MORTAR

ORDNANCE ML 4.2in Mk.I MORTAR
Image: ML 4.2in Mortar (IWM)
YearJuly 1942
Weapon TypeHeavy Mortar
Origin & Designer[@designer]
Numbers Produced3.800
Crew4 (Squad Leader, Gunner, Loader & Ammunition Bearer)
Calibre4.2 inch (106.7mm)
Elevation+45° to +80°
Traverse10°
Cartridge Weight[@cartridge_weight]
Round Weight9.1 kg
Barrel Length1.625mm
Overall Length[@length]
Grenade Types[@grenade_types]
Mount[@mount]
Combat Weight599 kg
Operation[@operation]
Cooling System[@cooling]
Sights[@sights]
Feed[@feed]
Practical Rate of Fire5 r.p.m.
Maximum Rate of Fire12 r.p.m.
Blank Cartridge[@blank_cartridge]
Muzzle Velocity223 m/s
Fuel Capacity[@fuel_capacity]
Minimum Range182m
Effective Range[@effective_range]
Maximum Range3.750m
Armour Penetration[@armour_penetration]
Bayonet[@bayonet]
Traction[@traction]
Variants[@variants]
NotesBased on the Stokes design the first 4.2in mortars were issued in 1942 and first saw service with the Royal Engineers at the battle of El Alamein. In 1943 the 4.2in was used to equip infantry units and were located in machine gun battalions at regimental level. By the end of WW2 the 4.2in had served on every front and continued in service with Royal Artillery units during the Korean War.