"pedal" style release used on the M1951 to a round button mounted slide stop lever. The trigger guard was also redesigned with a longer taper to improve the pistol's appearance. Later, in order to meet U.S. pistol import regulations under the 1968 Gun Control Act, a thumb shelf was added to the Model 70s left grip panel. The magazines retain the spur at the front of the floor plate, common to both the M1934/5 and M1951, as is common for many pistols with a European-style magazine release (a hinged latch in the bottom of the grip against the magazine's floor plate), and also some compact pistols as a means of extending the grip surface while reducing the overall profile of the firearm. Models 70 The original Model 70, also known as the "Puma", was offered in .32 ACP caliber and incorporated a cross-bolt safety. The pistol was fitted with brown plastic wrap-around grip panels. 70s The Beretta 70s utilized a steel frame. Available in .22LR, .32 ACP, and .380 ACP calibers, the 70s introduced a conventional thumb-operated safety on the left side of the frame. Later export (U.S.A.) models were equipped with grips featuring a prominent left thumb rest. 71 The Model 71 was sold in .22LR caliber only, and featured an aluminum alloy frame instead of the steel frame used in the Model 70 and 70s. This change reduced the weight of the pistol by about 200 grams. The 71 (and 72) were also marketed as the "Jaguar". 72 The Model 72 was the same as Models 71 and 75, except it was supplied with two barrels: one short barrel for self-defense, and one long barrel for target shooting. This model was also marketed as Jaguar. 73, 74, 75 Models 73, 74, and 75 were target models with a longer barrel than the others. Model 74 featured adjustable sights mounted on the barrel. Models 73 and 74 are taller, full-sized frames, whereas the 75 retains the compact frame of the other models. 76 Intended as a dedicated target pistol, the Beretta Model 76 featured a large barrel shroud integrated with the frame, similar to the later Beretta 87 Target, and was fitted with a mounting rail for optical sights. Produced from 1971 to 1985, the Model 76 used the same full-size frame as models 73 and 74. Sights are adjustable, but the Model 76 rear sight is mounted to