heavy gun

automatic heavy barrel rifle / heavy barrel automatic rifle

heavy-armored (heavy armoured)

heavy-weight torpedo / heavy weight torpedo (HWT)

heavy machine gun (HMG)

heavy-machine-gun backplate

heavy gun tank

heavy-barreled machine gun

L119 light gun (105 mm light gun)

submachine gun / sub-machine gun (SMG; smg)

gun control equipment / gun-control equipment (GCE)

duck gun (duck-gun)

flame gun / flaming gun

gun by gun

aircraft-carrying heavy cruiser

heavy armament

heavy assault rifle

heavy atom bomb

heavy bomber

Heavy Bomber Aviation Regiment (HBAR)

heavy cannon

heavy cruiser

heavy defense

heavy drop resupply

heavy engineer construction equipment

heavy expanded mobility tactical truck (HEMTT)

heavy flamethrower system (TOS)

heavy force vehicle

heavy ground

heavy hydrogen

heavy lift capability

Heavy Lift Challenge / Capability (HLC, the Framework)

heavy maintenance/repair