機器
aiming
amendment
ammunition
armed
army
assault
automatic
background
barrel
black
bullet
carbine
classic
closeup
combat
crime
danger
fire
firearm
forces
gun
horizontal
isolated
kill
machine gun
metal
military
modern
nobody
object
police
protection
rifle
rifle isolated
safety
security
shot
soldier
special
steel
stock
studio
tactical
target
trigger
violence
war
weapon
white