I was so excited to see the BMK, I decided to build it. But about halfway through the build, I was like, bolt action is cool but I like pump-action even better. So thus, this was created. I love the feel of this pump, and the gun is quite comfortable. Range depends on many variables,, wind, rubberband size, rubberband age, etc. Credit is given to Blue Mullet 2 for creating the epic BMK.