I know next to nothing about this MG and SBR stuff, just enough to know to steer clear of them. But my question is: what counts as an SBR? What do the rules say and where can I find them. Reason being is that I saw something at a show and it gave me an idea, but it just may go too close to SBR territory for me. The only thing that I have some idea about (or at least have heard before) is that it has to be more than 16 inches in length from the shortest non-moving part, but I really am not sure of this. Knowledge is power.