Will Hayden, he does all the carving, but I think he has someone who does the engraving.
Just to clarify,
Red Jacket Firearms, which is the company featured on the "Sons of Guns" TV show, and Red Jacket Muzzleloading are separate companies, with separate facilities, even though Will Hayden owns them both.
Will has been building flintlock rifles and fusils professionally for 20 years, and it is his main interest. He is very big into 18th century living history.
About three years ago he decided to launch Red Jacket Muzzleloading as a business. It is where Will does most of the actual work, though he has a small team of guys, two full time and three part time, who assist him.
Will personally does all the critical inletting and wood carving on each RJM gun. He is very good with a set of chisels.