An Antipodean entry with some extremely extremely rare features, but like so many weapons of this series, this week's entry was destined to be a footnote in the annals of firearms history. Created by Australian, Russell Robinson, inventor of other extremely odd looking firearms, the SR-11 had an auto-ejecting magazine and reverse rifle grooves on the outside of its barrel in an attempt to counterract effect of the spin of the bullet to improve accuracy. Join Jonathan as he calls in his science pals to see if all that effort was really worth it.