The sub-section of the TV Tropes site devoted to cliches in fiction about guns:
http://tvtropes.org/pmwiki/pmwiki.php/M ... playTropes
Just a sampling of articles from the index page:
More Dakka (as in WW1 machine gun- dakka-dakka-dakka-dakka...)
Everyone Is Armed
Hand Cannon
Full of humor, entertainment and info. Be prepared to waste an hour or five.