Orthographic blueprints origin?

I honestly can’t find where you guys get the orthographic images of weapons and cars , with both the plan elevation and end elevation and such. I’ve looked on The Blueprints.com and all I can find is side on pictures , not even outlines of white pictures , let alone images from other sides. Can someone please enlighten me where people find these?** There are weapons I’m trying to model from Pimp my gun creations **and i’m trying to get reference images from the weapons they come from , and I can’t find them anywhere. Any help would be greatly appreciated!

Well I’ve been getting reference images for weapons from here:

A page packed with nothing but gun porn, give or take a few magazines, masks and scopes.
They aren’t exactly blueprints however

I’m not sure where everyone’s getting the blueprints for other objects though