A tool that is only deadly if used for its intended purpose.

A tool that can equalize the playing field between an arrogant big man and a scared little man.

Australian slang term for a good bloke, reliable mate, or person otherwise admired for being efficient or formidable with regards some pursuit. Descended from wartime, when the word was used for a dependable comrade one was glad to have beside them; a 'good gun'.

An inanimate object, made of metal alloys, that has the capability to discharge ammunition consisting of a bullet, casing, powder and primer. Despite common misconceptions, guns, or more properly, firearms, do not have a magical, evil effect on anyone who is fit to use them. (Which happens to be anybody who is sane and does not have homocidal or suicidal tendencies) Also, the false belief that banning firearms under law leads to less crimes is false, as what happens when said firearms are banned is the criminals have all the firearms(as they are criminals, and therefore have no respect for the law), and not the good-doing, law-abiding citizens now have no effective means of protection.

Here in Canada, we have a long-gun (rifle, shotgun) registry. What's next, an edged and blunt object registry, meant to curb knife violence?

Australian colloquial term to denote an esteemed and relied upon friend, or anyone otherwise who is excellent and formidable with regards some activity. Descended from wartime and comrades who were dependable, trusted and efficient, a 'good gun' to have alongside you.

arms, esp. very muscular ones

A weapon that has existed since the 13th Century and has been developing more and more, as well as diversifying ever since.
They come in small, handheld forms known as pistols or handguns; or automatic, repeating-fire, styles known as machine guns; and longer types with stocks and that are designed to be fired from the shoulder: these are known as rifles. The many kinds of guns, the mechanical/technical information of a gun, and so on are WAY too long to list here. For additional information I recommend looking at the other examples below.