機器
accuracy
aim
aiming
ammunition
antiaircraft
antiaircraft gun
armed
army
attack
background
barrel
battle
black
caliber
cannon
clouds
combat
conflict
danger
defense
equipment
fight
fire
firearm
forces
gun
heavy
kill
machine gun
magazine
metal
military
power
precision
protection
round
security
shoot
shooter
shot
sight
sky
sniper
steel
target
war
weapon