機器
air
air force
ammo
ammunition
ar
ar15
arms
army
assault
assault rifle
automatic
black
brass
bullet
carbine
cartridges
concrete
copper
fire
firearm
fmj
force
full
full metal jacket
gun
handgun
jacket
lead
m16
m4
m4a1
machin
metal
military
projectile
rifle
rifle bullet
round
shells
soldier
special
surface
us
us army
us marines
usgi
usmc
war
weapon