What blowback-operated semi-automatic pistols have a similar design to Astra A-60?
Astra A-60 The Astra A-60 is a double-action,single-action, semi-automatic pistol at one time produced in Spain by Astra-Unceta y Cia SA. The design is similar to the Walther PP and features a slide-lock release lever.
Heckler &amp; Koch P9 The HK P9 is a semi-automatic pistol from Heckler & Koch in 9×19mm Parabellum and the first to use a variation of H&K's roller delayed blowback system in a pistol format and polygonal rifling now common in H&K designs. Design began around 1965 and production ran between 1969 and 1978. Only 485 single-action P9's were produced and were discontinued in 1970. A traditional double action version, the P9S (the "S" standing for "Spannabzug", or "double-action trigger") was manufactured in greater numbers.