After seeing how well the checkering for the 13" barreled Gonzo Luger Carbine turned out, I asked Jim Solomon to checker the forearm for the 16" barrel as well, and he kindly consented.
Here's the finished 16" barreled action mounted on the Gonzo Carbine, with checkered 16" forearm installed. It's had two coats of BLO and rubbed out after each dried coat.
After consulting with me, my nephew (heir & executor) has decided that this Gonzo Carbine will be part of our family heritage, and be passed down rather than sold off. I guess my next project will be to construct/modify a case for it. The case will have to hold the grip assembly, the buttstock, both barreled actions, two magazines, and whatever other accessories I can dig up.