чотириствольна зенітна установка
four-cycle / four-stroke
four by four
fingertip formation / finger-four formation / four finger formation
heavy-barreled machine gun
side-by-side double-barreled gun
four-charge gun
barreled weapon
cannon barreled pistol
double-barreled saddle pistol
anti-aircraft gun
self-propelled anti-aircraft gun (SPAAG)
Flakpanzer Gepard (нім. anti-aircraft-gun tank Cheetah)
self-propelled AA / anti-aircraft gun (vehicle / weapon)
anti-aircraft gun vehicle
self-propelled anti-aircraft gun
anti-aircraft artillery observation aircraft
four-point barb
four by two
four-groove barrel
four-point
four-stage compressor
four-way valve
four-wheel drive
four-wheel drive truck
four-boss breaker cam
four-stroke cycle
four-step stand
four-stroke engine
Four Tonner (Bedford truck)
anti-personnel-anti-material projectile
AV/AT mines (anti-vehicle / anti-tank mines)
anti-tank gun