The Parabellum-Pistole (Pistol Parabellum), popularly  known as the Luger, is a toggle locked, , . The design was patented by in and produced by arms manufacturer (DWM) starting in 1900; it was an evolution of the designed .
The Luger was made popular by its use by Germany during and . Though the Luger pistol was first introduced in , it is notable for being the pistol for which the (also commonly known as the 9mm Luger) cartridge was developed.
The Luger uses a toggle-lock action, which utilizes a jointed arm to lock, as opposed to the slide actions of almost every other semi-automatic pistol. After a round is fired, the barrel and toggle assembly (both locked together at this point) travel rearward due to recoil. After moving roughly one-half inch (13 mm) rearward, the toggle strikes a cam built into the frame, causing the knee joint to hinge and the toggle and breech assembly to unlock. At this point the barrel stops its rearward movement (it impacts the frame), but the toggle and breech assembly continue moving (bending the knee joint) due to momentum, extracting the spent casing from the chamber and ejecting it. The toggle and breech assembly subsequently travel forward (under spring tension) and the next round from the magazine is loaded into the chamber. The entire sequence occurs in a fraction of a second. This mechanism worked well for higher pressure cartridges, but cartridges loaded to a lower pressure could cause the pistol to malfunction because they did not generate enough recoil to work the action fully. This resulted in either the breechblock not clearing the top cartridge of the magazine, or becoming jammed open on the cartridge's base. 
In World War I, as were found to be effective in , experiments with converting various types of pistols to (Reihenfeuerpistolen, literally "row-fire pistols" or "consecutive fire pistols") were conducted. Among those the Luger pistol (German Army designation Pistole 08) was examined; however, unlike the , which was converted in great numbers to Reihenfeuerpistolen, the Luger proved to have an excessive in full-automatic mode.
The Luger pistol was manufactured to exacting standards and has a long service life. praised the Luger's 55 degree grip angle and duplicated it in his .
The P.08 was the usual for personnel in both world wars, though it was being replaced by the starting in . In 1930, took over manufacture of the P.08 (until 1943).
The Army evaluated the Luger pistol in 7.65 mm P (.30 Luger in USA) and adopted it in 1900 as its standard sidearm, designated Ordonnanzpistole 00 or OP00, in 1900. The Luger pistol was accepted by the German Navy in 1904, and in (as Pistole 08) by the German Army (chambered in ) replacing the . The Lange Pistole 08 or Artillery Luger had a stock and longer barrel, and sometimes used with a 32 round drum magazine (Trommelmagazin 08).
The United States evaluated several semi-automatic pistols in the late 1800s, including the , , and an entry from . In 1900 the US purchased 1000 Lugers for field trials. Later, a small number were sampled in the then-new, more powerful 9 mm round. Field experience with .38 caliber revolvers in the Philippines and ballistic tests would result in a requirement for still-larger rounds.
In , the US Army held trials for a large-caliber semi-automatic. DWM provided two samples chambered in for testing. After initial trials, DWM, Savage, and Colt were asked to provide further samples for evaluation. DWM withdrew for reasons that are still debated, though the Army did place an order for 200 more samples.
Although obsolete, the Luger is still sought after by collectors both for its sleek design, superlative accuracy, and by its connection to and . Limited production of the P.08 by its original manufacturer resumed when refurbished a quantity of them in for the pistol's centenary. More recently, announced  the continuation of its Parabellum Model 08 line with 200 examples at $15,950.00 a piece. The Luger was prized by Allied soldiers during both of the World Wars. Thousands were taken home during both wars, and are still in circulation today. 
- Imperial Lugers by Jan C. Still (Still's Books - 1994)
- Third Reich Lugers by Jan C. Still (Still's Books - 1988)
- Weimar Lugers by Jan C. Still (Still's Books - 1993)
- Lugers at Random by Charles Kenyon (Hand Gun Press - 1990)
- La Luger Artiglieria by Mauro Baudino (Editoriale Olimpia - 2004)