My results were less than impressive. I bought the complete bluing kit, as sold at their web site. I started with a new barrel, in the white, and polished it to a 600 grit finish. I then went through all the steps explained in their instructions. Heated the barrel with a Mapp gas torch, and wore latex gloves throughout the operation. I gave it a cleaning with their cleaner, and 15 coats of the solution. My result was a fairly dark gray, but not a deep blue-blak, as most guns have. I cleaned again, and repeated, but it still doesn't look good enough. Guess I'll take it to the smith, or cold blue it with Oxpho, or 44-40.