Is this a thing anywhere? It doesn't appear to be from a quick Google.
What I mean by "quick-adjust LOP" is something akin to an AR-style stock that can quickly and easily be adjusted, but in a form factor that matches traditional shotgun stocks, not a pistol-grip stock. In other words, I do NOT mean an adapter to install an AR stock on a shotgun, but more so a traditional rifle-style stock where the butt-plate is quickly adjustable for LOP, potentially in the field on on-the-go. Not something that requires tools, or shims, or disassembly, etc.
not really something I have an immediate need for, just something I got curious about, googled, and didn't see so i thought I'd ask the brain trust.