I posted this on another thread on this site, but here it is again.
He really doesn't use a gun. First of all, He was a horseman: cavalry I expect. Job 39:19-25
"Hast thou given the horse strength? Hast thou clothed his neck with thunder?
Canst thou make him afraid as a grasshopper? The glory of his nostrils is terrible.
He paweth in the valley, and rejoiceth in his strength: he goeth on to meet the armed men.
He mocketh at fear, and is not affrightened; neither turneth he back from the sword.
The quiver rattleth against him, the glittering spear and the shield.
He swalloweth the ground with fierceness and rage: neither believeth he that it is the sound of the trumpet.
He saith among the trumpets, Ha, Ha! And he smelleth the battle afar off, the thunder of the captains, and the shouting"
And Rev 19:11,
"...and behold a white horse; and he that sat upon him was called faithful and true..."
And He prefers the sword, Rev 19:15.
"And out of His mouth goeth a sharp sword, that with it He should smite the nations..."