Thanks to all the PGCA members who've taken the time to fill in the background on LOP issues. I was pretty sure it'd be a long shot to find a 15" factory LOP, and that's been confirmed - but it's not a reason not to ask, or look. I'm determined not to do anything permanent to change the stock length on my current gun, and I may give the slip on pad a try. I'm using this GHE 16 g to indulge a longtime flirtation with Parkers, and to get reacquainted with handling a shotgun (20 year absence). The regimen is to develop some good habits with clays, but I plan to work up to some Montana upland game birds. A journey, in other words.
Thanks again for the time and trouble, and please keep me in mind if you stumble across that 15" LOP 16 g. SxS that just may be out there. - Cheers.