I wrote a somewhat lengthy and slightly rambling commentary about this in the gun thread last week. Fair warning, it's a long read
I don't guarantee its 100% accurate, in fact I'll guarantee there's a few mistakes in there

but it's food for thought. Stimulating one area of the economy with money that was going to be spent in a different area of the economy is not really stimulation at all. It's just reallocation of household funds from one project to another. At least the firearm industry has a higher proportion of "Made in America" products than say, the electronics industry does.
http://www.cigarasylum.com/vb/showth...72#post1786872