I have a Thompson Center Black Diamond for sale. It is .50 Caliber, blued on synthetic. It has a Bushnell Dusk to Dawn Banner scope 3-9X40 mounted on it. The gun is in almost perfect condition. When I clean it I clean it with Q-tips, therefore it is very clean. Gun is not as good as my Encore, however at less then 150 yards it can give it a run for its money. PM me offers, I will send Pictures. I have done load development on this rifle and can/will tell you what I have found to be the most accurate loads.