Wink (and other professionals), how 'bout a few words on how to photograph guns? Things like focus, light burn, shooting black guns against a white background, indirect lighting, composition, cluttered background, etc.
Mayhaps a quick course in how to build a cheap light box would aid and assist.
Bracketing and depth of field might be a little too deep, but I see way too many photos shot with an autofocus camera that are out of focus, and have severe burn.

It's all about the light, not the camera. But you do have to have a camera that lets you control all the parameters of a photograph: manual exposure controls, manual focusing and off-camera lighting. I have never taken the time to create a tutorial, but this one about photographing knives has good tips.

https://www.youtube.com/watch?v=i1Mkki1L3V4

Maybe someday when I've got the time I could put something together, but it probably wouldn't be any better than what you can see on a bunch of different youtubes on product photography.