хвостовий авіаційний кулемет
back-to-back circuit
back-to-back connection
back-to-back radio stations
back-to-back relay
blow-back operated 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
back-up fire control
back-up system
cut back co-operation
I read back
play back kit
pull back
push back
read back
reverse engineering ( back- wards engineering)
Camel-back water pouch
Field Pack, Air Support Back
back brief / backbrief
peel back
back on the block
back-up circuit breaker
armor back plate
back bearing housing
back blow
back contact
back cushion
back fork