What's your name and state? It's bugging the heck out of me that I can't remember. I'm thinking the gun was likely a twin-tube 909 with a Dave S moderator, and that I sold it to you just before I moved from Big Bear, CA to North Idaho in 2009.
After escaping K'alifornia I got into powder-burners as an 07-02 FFL/SOT and sold almost all my airguns in about 2013. Then I got hooked on airplanes, but with all the awesome new models on the market today, the needle is back in the arm!
In the past 2 weeks I've picked up and LCS SK-19 .25, AEA SS+ .30, Drulov DU-10 enroute from the UK, and an 1890's Giffard 8mm shotgun will show up on my Ring doorbell tomorrow

.......................you can check out, but you can never leave......................