French Gray Finish on a TC Barrel - This is the price for doing the barrel only. If you would also like to French Gray finish a frame, Click Here. Our French Gray finish is a soft looking, hard gray-metal finish which is superior to stainless steel in its corrosion resistance, wear ability, and operational "slickness". We apply it to blue steel gun parts with excellent results... 4-6 week turnaround time. We've done our French Gray Finish on all types of firearms from handguns to long guns. For more information about this process, visit our French Gray Page.