機器
aggression
armed
army
arrest
assault
assaultrifle
automatic
background
black
bullet
business
caliber
calibre
carbine
commando
conflict
danger
end
enemy
gun
gunpoint
gunpowder
isolated
law
lawenforcement
metal
military
police
rifle
shot
sight
soldier
submachine
submachinegun
swat
symbol
target
targeting
terrorism
war
warfare
weapon
white