That's gonna be hard to piece out. Defense industry spending is usually grouped with aerospace, and furthermore defense industry contracts include a loooot of

That's gonna be hard to piece out. Defense industry spending is usually grouped with aerospace, and furthermore defense industry contracts include a loooot of stuff that isn't weapons manufacturing - maintenance, random near academic style research, stuff that isn't even weapons (like... furniture and random supplies and shit), as well as labor or even pmc stuff. So you can probably figure out hard upper boundaries, but determining the percentage that is weapons even of just that industry will be difficult. If I had to WAG it, I'd say easily it's less than 10% of a single individual large industry (like gasoline or cars or whatever), so probably well under 2-3% of total industry.