Beretta 92; the M1951 was instead adopted by the Italian Navy, the Carabinieri and the Italian national Traffic Police but was replaced in all services with the above-mentioned Beretta 92 in 1977. Other countries to have adopted the M1951 include Egypt—where it has been produced by the local firm Maadi as the Helwan—Israel, Iraq—where it is license-built as the Tariq), Nigeria, Libya and Tunisia. In most of these countries, the pistol is now out of service. On the civilian market, the pistol is known as the M951 "Brigadier." After 1968, in the United States, it was briefly referred to as the 104 in promotional literature. Design details The M1951 is a short recoil–operated, locked breech pistol with a vertically falling locking piece and an open top slide (the locking mechanism design was influenced by the Walther P38 pistol). The locking piece, located under the barrel, is unlocked by a sliding pin and locked back into battery by a beveled surface on the pistol's frame. The locking piece features two locking lugs that engage appropriate recesses cut into the slide's internal side surfaces. When the pistol is fired, the locking piece, integral with the slide, goes back together with the barrel which is locked to the slide. After a brief period of unrestricted travel of approx. the unlocking pin on the rear barrel lug strikes the receiver and stops. As the barrel and slide continue back, the locking piece strikes the stationary plunger and is forced down into recesses in the slide. The barrel comes to rest but the slide continues rearward for a further . Upon forward return, the slide picks up the barrel and the locking piece on the barrel lug is lifted up by the receiver cam to lock the barrel to the slide. The spring-loaded extractor is integrated into the slide, and the fixed-type ejector is integral to the pistol's frame. The pistol has a hammer striking mechanism (with an exposed hammer) and a single-action trigger with a disconnector, which enables semi-automatic fire only. A cross-bolt safety mounted on the weapon's frame (beneath the hammer) provides safe operation with a cartridge introduced into the chamber. In the “weapon safe” position (the safety's button pushed in to the left) the slide catch is disabled. The M1951 is fed from an 8-round detachable box magazine. A hold open device will keep the slide locked open after discharging the last