I've been looking through some of my collection of materials on historical firearms, specifically in Gusler and Lavin's "Decorated Firearms 1540-1870" (Colonial Williamsburg Foundation, 1977). Page 158 has what "is generally referred to as a Jaeger." From the black and white illustrations it would appear that the barrel on this one was left in the white. The carving (the book concentrates on inlays and metalwork) seems to be low relief and not very fancy at all. Cheekpieces in particular seem to be left plain, which makes sense.

Which is good, 'cause I'm not a fancy carver.

If you can find a copy of this book I recommend it; it's a great example of the sorts of guns that kings, nobles, and the very rich owned. I could be wrong, but I don't think that many ordinary folks owned firearms inlaid with gold and silver wire on a carved ivory stock, or with pierced gold sideplates!