Question: The Astra Model 900 is a Spanish copy of a German semi-automatic pistol that was produced through which years?

Context articles: Pistol model 2000
Smith &amp; Wesson Model 39
Heckler &amp; Koch P2000
AutoMag (pistol)
Mauser C96
Semi-automatic pistol
Astra A-100
Astra 600
Astra Model 900
Savage Model 1907

The Pistol model 2000 (also "md. 2000") is a semi-automatic pistol designed and manufactured by RomArm via the Cugir Arsenal of Romania.
 The pistol, chambered in 9×19mm Luger is an almost-identical copy of the Magnum Research Jericho 941 (Baby Eagle).
 The pistol is the standard sidearm of the Romanian Army.
The Smith & Wesson Model 39 was a semi-automatic pistol developed for the US Army service pistol trials of 1954.
 After the Army abandoned its search for a new pistol, the Model 39 went on the civilian market in 1955 and was the first of Smith & Wesson's first generation semi-automatic pistols.
 Used by the Illinois State Police and the US Navy SEALs, it was a groundbreaking pistol for use with the military and law-enforcement agencies.
The Heckler & Koch P2000 is a German semi-automatic pistol introduced late in 2001 and intended primarily for law enforcement, paramilitary, and commercial markets.
 It is based on the USP Compact pistol.
 The P2000 was designed specifically with improved ergonomic characteristics; it has features that reduce handling related stresses, while at the same time increasing user handling and comfort.
The .44 Auto Mag pistol (AMP) is a large caliber semi-automatic pistol.
 It was designed between 1966 and 1971 by the Auto Mag Corporation to make a semi-automatic pistol chambered in .44 Magnum.
The Mauser C96 ("Construktion 96") is a semi-automatic pistol that was originally produced by German arms manufacturer Mauser from 1896 to 1937.
 Unlicensed copies of the gun were also manufactured in Spain and China in the first half of the 20th century.
A semi-automatic pistol is a type of pistol that is semiautomatic, meaning it uses the energy of the fired cartridge to cycle the action of the firearm and advance the next available cartridge into position for firing.
 One cartridge is fired each time the trigger of a semi-automatic pistol is pulled; the pistol's "disconnector" ensures this behavior.
The Astra A-100 is a Spanish double-action/single-action semi-automatic pistol that was manufactured by Astra-Unceta y Cia SA beginning in 1990.
 It was distributed in the United States by European American Armory (EAA).
 The A-100 is also known as the "Panther" as imported into the United States by EAA, and some specimens have this roll-marked on the left of the slide.
 The A-100 design is a further development of Astra's earlier A-80 and A-90 models.
 The A-80 was originally patterned after the SIG P220.
The Astra 600 was a Spanish semi-automatic pistol used during World War II.
 It was a shortened version of the Astra 400 in 9×19mm Parabellum.
The Astra Model 900 is one of many Spanish copies of the German Mauser C96 semi-automatic pistol.
 It shares the same caliber, magazine capacity, and holster type and is generally very similar to the German handgun.
The Savage Model 1907 is a semi-automatic pocket pistol produced by the Savage Arms Company of Utica, New York, from 1907 until 1920 in .32 ACP and from 1913 until 1920 in .380 ACP caliber.
 Although smaller in size, it is derived from the .45 semi-automatic pistol Savage submitted to the 1906-1911 US Army trials to choose a new semi-automatic sidearm.
 After several years of testing the Savage pistol was one of two finalists but ultimately lost to the Colt entry, which became famous as the Colt Model 1911.
 181 of these .45 ACP pistols were returned to Savage after the testing and sold on the civilian market.