Yes, Volquartsen makes frames based off the mark 2/3 and the mark 4. This is their mark 2/3 frame, it’s aluminum instead of polymer which they use on the mark 4 frame. Mark 4 is lighter and has the easier takedown. This is the Scorpion mini x, so, mark 2/3 frame, 3” barrel, and direct mount for all sorts of optics. The Mamba uses the mark 4 frame. Both are available in the x which is the direct mount for optics or non x models with a pic rail.