機器
3d
amendment
america
american
army
assault
automatic
background
barrel
black
bullet
carbine
cartoon
change
clip
conflict
control
crime
danger
fire
firearm
graphic
gun
icon
isolated
isometric
m16
m4a1
metal
military
muzzle
patriotic
retro
rifle
safety
shot
silhouette
symbol
usa
vintage
violence
war
weapon