WHAT DOES 18.5″ BARREL MEAN?

Developed by Heckler & Koch given that the Maschinenpistole 5 during the mid 1960s, the MP5 and its kin have been meant to serve as inexpensive nonetheless modernized submachine guns for that write-up-WWII period. But, these compact, stamped, roller-delayed guns basically emerged from a series of World War II arms developments.Once the introduction