Originally posted by beet1e
LOL - out walking - and you have to carry a gun???
sad - but funny.
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lol, its the american way

when i went to vegas i went to a shooting range, and some crackpot told me that he would constantly carry atleast two guns on him at all times since 9/11.
i wish i could get guns over here.ive got crossbows, swords, rifles, shotguns, but handguns are just lost to english law

anyway, my advice would definitely be for a .357 revolver. cheap, common ammo type, stopping power, and size. you will likely never use it, and keep it hidden, so there's no need for a fancy expensive gun, and a revolver you can keep loaded for years, without worrying about the gun failing, as is common with auto's.
get a short barrel chrome gun, it looks mean. most places will let you try it out on a range, so give it a go. feel for balance, weight, ease of use, accuracy, and noise. you want something loud as a deterrent, but if its too loud, a lot of people will hear, and if you hit the guy bad, that noise will get you noticed.
and one last thing, aim for arms, mid shoulder on their right side (your left as they look at you), and bottom of legs. a shot to the shoulder will knock a guy down, especially if you go with something .357 or bigger, but if you hit the wrong side, and hit him in the heart, ure boned. never shoot anyone in the thigh, it can kill from nerve shock, bleeding or gangrene.
i hope you never need to use that advice, but there may be times.
people will ask how i know this all at the age of 16, and my answer is americans

good luck with finding the right one bud