Ok I use Poser stuff, they are bought items, perfectly legit, perfectly legal to use 3d renderings made from then, not the actual models, k? So any images I make for you would be legit.
textures I know tons of texture sites but most are not for commercial use, ie ok for renders, not for inclusion in 3d molees to whit, games. :/
Dosche Design is a great sorurce of high grade commerical texxtures but no idea if that's too high spec for you.
I have lots of contemporary weapons as 3d models for Poser so I cna render varied weapons I also have 3 different suits of "sci-fi" armour posisble suitbale for rendering as different XCOM amrour.
some spamming sucmbag's been using it for junk mail, sigh par for the course.