The Dormus was not slide operated. But it was the first semi automatic.Walther catalog has True for the combination fixed barrel and blowback according to the Walther catalog PPK page.
But earlier, the
Salvator Dormus 8 mm semi auto
Patent in 1891. Fixed barrel but may not be a blowback action.
Delayed blowback bolt action. Gun Jesus did a video on it. Not sure about posting external links on the forum, a simple search on the Utoob will find it.How did the bolt operate?
The Browning Models 1899 and 1900 were fixed-barrel blowback semi-autos, and were immensely successful. At least 100,000 had been produced and sold before any Walther pistol of consequence ever appeared.Is the 'fixed barrel' the sticking point here, since the blowback Brownings weren't pinned in place...tho' they didn't move when the gun cycled.
Rice. Matt (2011). "Walther celebrates 125th anniversary". Shooting Industry. 56 (8): 36—37.Credited by whom?
Well, Fritz apparently was as precocious as his successors are inventive in ways to extoll their newly-acquired heritage.In Walther's handgun catalog five years ago the model 1 wasn't mentioned as the first usable German self-loading pistol (like Marr Rice did) but as the world's first practical self-loading pistol. The folks at Walther Arms were wrong about the year too. It was 1910.
But the big surprise is the early development activity of Fritz Walther in 1886, shortly before his birth.