About the Handgun:
The Thunder 40 was the first Bersa pistol chambered for .40 S&W. Due to the 1994 U.S. ban on magazines exceeding 10 rounds capacity, the full-size Bersa Thunder 40 with a magazine design capacity of 13 was initially unable to enter the U.S. market. Subsequently, Bersa introduced a compact version, the MiniThunder 40, in 2000 that met that ban restrictions. Since the ban has lifted both versions are now available.
About the Manufacturer:
This Argentina company was founded in the mid 1950s by three Italian immigrants, all who were mechanical engineers. At first they just made parts under contract for another now defunct Argentina arms manufacturer. In 1959 they began making their own pistols and in 1960 they established their trademark name - Bersa. Their pistols today are known worldwide for both their reliability and economy.
About the Cartridge:
This cartridge was developed as a joint venture between Winchester and Smith & Wesson. It was an effort to to create a cartridge with the same power as the 10mm Norma round that the FBI had just started using, but in a shorter case. The shorter cartridge would facilitate accuracy and allow use of a smaller, more comfortable grip frame. The .40 S&W has become the cartridge of choice for many law enforcement agencies in the United States.