Some time ago on the ASSRA forum there was a post about the remainder of the Martini parts from the late John Appleton‘s business being sold to a couple of fellows. I was there at the Front Royal store some 7-8 years ago and there were crates of stock pieces. You might get on that forum to see if somebody there can hook you up. I had the link saved but it comes up now as missing. The original post was maybe a year and a half ago.
Tony