I have a Sterling for sale, not sure which one but most likely Pro-Line. It is silver and has had a detent added to it, because it did not have one. It has a 16" All-American and the stock barrel. I have changed the springs and added a KAPP high flow valve pin, along with polishing everything. I changed out the stock grip frame with a modified Mag frame, which gave it a short, light pull. I still have the stock frame, which will be included. It is wrapped in a set of SmartParts wood grips. For tank hook-up there is an In-Yo-Face t-stock with a PMI THOR regulator. The reg gives you very easy adjustment of velocity with no need to change out springs.
If I can find it I will also include a stubby 16 oz CO2 tank.
I am looking to get $300 shipped for it, but definately no trades. I am selling it to get some money for a new engine for my car.
Let me know if you have any questions,