This is an excellent example of a Smith & Wesson Model 76 submachine gun developed in the early to mid 1970s. They were originally designed for use by the police and SWAT teams but were eventually replaced by the HK MP5 and later the standard Colt M4 carbines. They are very well-manufactured SMGs that are similar in design and operation to the British STEN, Swedish K-45, and the German MP40. They have round tube receivers with a perforated barrel jacket/barrel nuts on the end to facilitate rapid and easy barrel replacement. It is marked on the lower left side with the Smith & Wesson factory address and "Made in the U.S.A." with "SMITH & WESSON" on the side of the receiver. The right side magazine well has the standard large S&W intertwined factory logo, with "MODEL 76/ U660" on the rear of the tube. It has an ambidextrous safety with fixed sights with a rubber covered folding steel wire stock. As noted, this lot comes with six original 30 round magazines.