Have a light weight McGowen barrel, cut by Sin Arms. As pictured it weighs 2 pounds. Around a 100-150 round count. I personally only have a handful of shots through it. Have no good data, just didn't run it enough, plans changed. Its a small shank, and a 20 inch barrel. My build with it weighed 6 pounds or so
I thought it would be cool to tape a spiral on it and bead blast it, well, it wasn't. You can see small areas where my 600 grit polish did not take it all off, nut pretty much covers it, but a little more shoe shine with some wet/dry will clean it up.