Question: Which submachine gun built by Societe Luxembourgeoise SA in Luxembourg between 1954 and 1957 was capable of using magazines developed in Nazi Germany?
Context: The M56 submachine gun is a Yugoslavian submachine gun chambered in 7.62×25mm Tokarev, designed for use with the Yugoslav People's Army.  Initially a state-funded product, it was later produced by Zastava Arms and saw use in a number of conflicts following the breakup of former Yugoslavia.  The M56 is a clone of the MP 40 submachine gun used by Nazi Germany, easily distinguished from the MP 40 by its increased length and curved magazine. The Type 64 submachine gun is a submachine gun of Chinese origin.  Designed for silent operation, the Type 64 has an integral suppressor making the weapon considerably quieter.  The weapon is a magazine-fed selective-fire submachine gun using a closed-bolt, blowback action, chambered for 7.62×25mm Type 51 (A Chinese manufactured version of the 7.62×25mm Tokarev round). The CZ Model 25 (properly, Sa 25 or Sa vz.  48b/samopal vz.  48b – "samopal vzor 48 výsadkový", "submachine gun model year 1948 para") was perhaps the best known of a series of Czechoslovak designed submachine guns introduced in 1948.  There were four generally very similar submachine guns in this series: the Sa 23, Sa 24, Sa 25, and Sa 26.  The primary designer was Jaroslav Holeček (1923–1977), chief engineer of the Česká zbrojovka Strakonice arms factory. The Sola is a submachine gun that was built by Societe Luxembourgeoise SA in Luxembourg between 1954 and 1957.  It uses the 9×19mm Parabellum round and is capable of using MP 40-type magazines, which were popular around Europe at the time.  This weapon saw service in Africa and several are still in use today. The M49 submachine gun is a Yugoslavian submachine gun chambered in 7.62×25mm Tokarev, designed for use with the Yugoslav People's Army.  While externally similar to the PPSh-41, as well as being able to interchange magazines, the M49 is actually very different in both construction and design.  More similar in nature to the Italian Beretta Model 38, the M49 features a one-piece tube receiver which contains the bolt, recoil spring and buffer mechanism.  Constructed of machined parts as well as simple tubing, the receiver assembly incorporates a ventilated barrel shroud to protect the operator from being burned during periods of rapid-fire, as well as a simple muzzle brake to steady the weapon. The Beretta Model 1918 was a submachine gun that entered service in 1918 with the Italian armed forces.  Designed initially as a semi-automatic rifle, the weapon came with an overhead inserted magazine, an unconventional design based on the simplicity of allowing a spent round to be replaced using only gravity.  The gun was made from half of a Villar-Perosa aircraft submachine gun, and as such it can be considered the first submachine gun issued to and used by the Italian armed forces, and is possibly the first SMG used as a general-issue combat weapon. The MP 40 ("Maschinenpistole 40") was a submachine gun chambered for the 9×19mm Parabellum cartridge.  It was developed in Nazi Germany and used extensively by the Axis powers during the Second World War. MCEM-2 (Machine Carbine Experimental Model 2) submachine gun was produced only in prototype form, but was one of the very first submachine guns to combine wrap-around bolt and magazine in pistol grip, features later copied in the Czechoslovak Sa vz.  23, Israeli Uzi and a great number of other submachine guns.  MCEM-2 was the second prototype in a line of experimental submachine guns, designed in Britain in 1944.  It was envisioned as a possible replacement for the STEN submachine gun then in service.  The MCEM-2 was developed by Jerzy Podsedkowski, a Polish constructor involved in work on Vis and Mors, who fled from occupied Poland to Britain.  It is believed that prototypes of MCEM-2 were made before the end of WW2, and its derivatives MCEM-4 and MCEM-6 were tested soon after the war.  The latter modifications differed mostly in adoption of the rate-reducing mechanism, incorporated into trigger unit; the rate of fire therefore was decreased from 1000 to more realistic 600 rounds per minute.  Nevertheless, neither prototype was found suitable for adoption, and several years later British army adopted a more conventional submachine gun, the Sterling-Patchett. The Type 85 submachine gun was developed during the early 1980s as a less expensive replacement for the Type 79 submachine gun, as well as a silenced version to replace the Type 64 submachine guns which were in service with the People's Liberation Army (PLA).  Both weapons are used by PR China police units, as well as PLA soldiers. The Chropi GP10 was a submachine gun built by Chropei (which used the "Chropi" spelling on its weapons), a Greek chemical company.  It was designed by a team under Sotiris Sofianopoulos (apparently an original Greek-Cypriot design) and was proposed to the Greek Army in 1975.  Initial positive performance results during tests were followed by a final rejection with dire consequences for the company, which had improved its existing infrastructure in order to mass-produce the weapon.  About 100 units had been produced, which were delivered to the Greek state and ended up in Greek Army storage facilities.
Answer: The Sola