機器
223
556mm
air
arms
army
assault
automatic
bullet
carbine
collection
cooled
direct
fed
fire
firearms
forces
gas
gun
impingement
m4
m4a1
magazine
military
operated
police
rifle
shot
shotgun
silhouette
soldier
special
stock
swat
tablet
target
telescoping
us
us army
us marines
usmc
war
warrior
weapon