there's different levels....
the common cheap ones will only stop like a 22 and maybe a 9mm...
if somebody is going after you with a rifle you would need like the most expensive one,I saw a vid on youtube of a dude taking 44 magnum and 308 FN FAL shots point blank with this vest and he didn't even stumble back
the heavy armor weighs a ton tho...
it also depends how old it is,you need a pretty new one,the older it gets,it degrades.
:p looked into it awhile back when I was preparing for the zombie apocalypse
take it for what you will,but I read a story of where this dude was a tow truck driver,went to the ghetto to tow a car,guy comes out and shoots him twice with a 380 and the vest stopped it,but,it cracked 2 ribs I think,which in turn took out a golf ball size chunk out of his liver and he barely made it to the hospital before bleeding out
me personally,I probably ain't got the balls to be going against armed people
crackheads are crazy man
it would be a hell of a rush tho...