Sure, why not...
Here's one I scratch-built, with a barrel a friend of mine made-
And a few I built from plans and parts (not really "kits")-
Video links to see how slow the flintlock ignites (real time, and then slowed down to 1/4 speed, because it's cool!)-
This one is from a kit-
And of course, I don't limit myself to just the new-fangled items, here's another set I built-
And of course, I use them in the field too-
And in competition-
I also have some modern firearms; Winchester Model 70 .270, Remington 870 Wingmaster 12ga, Remingtom 700 BDL 22-.250, .22/.22Mag revolver, .38 revolver, .22 LR lever action, etc, I just don't take pictures of those.