The "third series" model was the definitive version. Its lengthened slide further improved the pistol's balance. The relatively large sights of the Egyptian Contract Model 951 were replaced by the original, smaller, unobtrusive sights, which were less likely to snag on a holster. Serial production of this definitive version initiated in Italy in 1955, and in Egypt in the early 1960s. The M1951 is no longer produced in Italy and was never adopted by the Italian Army. The Italian Army instead opted to keep the .380 ACP Beretta M1934 in service until the adoption of the 9×19mm 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.