Introducing the Spring M40 Submachine Gun Airsoft Gun. Utilized by the German’s in World War II now you’ll be able to own the airsoft version of this unbelievable submachine gun. The M40 includes a folding stock with the intention to swing underneath the gun bearing in mind a more compact gun. The hop-up will allow the BBs to shuttle further with more accuracy and the R.I.S. positioned above the gun will allow you to customize the gun with any attachment. Get the Spring M40 Submachine Gun Airsoft Gun and sign up for the action!