Very nice in deed!
I am in the middle of my first flint lock rifle build also (stalled at the moment but plan to get back to it this winter).
I guess you could say that it's more of a kit than anything, .50 cal from Clark Industries, still a lot of work to get everything inlet properly and the wood shaved down, being so very careful not to screw up that wonderful curly maple wood.
There are a few tools I will need to pick up before I can continue.
If things slow down enough it might be possible to have the rifle complete around Christmas... at the latest complete by spring.