Yep, JP gunstock Co, Jim and Pat Searles from Las Vegas, NV.
The Mc Coy was available in .32 or .45, flint or percussion, 42" brown barrel and lock, brass buttplate and trigger guard, full length curly maple stock, 7.5 pounds.
According to the 6th edition of the Blue Book of Modern BP Gun Values, 100% condition is $690.00, 98% is $600, 90% is $480 and 80% is $350. Last MSRP was $700.00
Jim had converted his garage and a couple of add on rooms to his rifle shop at his house. All in all, a nice neat operation.
I had one of his JP Henry rifles in .54 with a GRRW barrel on it, and it was one of my all time favorite rifles. Really sorry I ever sold it.
As was said, sometime in the late 90's, Jim sold the business and he and Pat moved to the California Gold Rush country to raise hunting dogs, I believe. The fellow who bought the business moved it to Michigan, IIRC, but has done nothing with it since. Must be saving it for a very rainy day.