Almost only sexual meaning; the use of a gun may be desirable, expected, may also cause fear. Most of the weapons symbolize masculinity.
see: a call for caution, the announcement of an argument
get: you are facing great honors
buy: a conflict with the law
have: you are tired and upset, you should take a vacation and relax
keep: you will be the object of intrigue
hear the clang of a weapon: you feel some threat; think, whether you really have something to fear about, or is it just your imagination?
destroyed or useless: you are trying to defend against the difficulties and adversities of life for nothing
practice with a weapon: your efforts will be appreciated; a reward awaits you
polish the gun: in the nearest future a lot of nice things will happen
see people with guns: there are difficulties ahead of you
cold steel (e.g.. sword): in men a symbol of aggressive sexuality, while in women anxiety, fear of sexuality, and longing for a caring man
firearm: approaching troubles; if you hear a message in a dream about a firearm, someone from your family will fall ill