Question: What was the name of the forerunner of the bolt-action rifle chambered for the 7.92×57mm Mauser cartridge that was adopted on 21 June 1935 as the standard service rifle by the German "Wehrmacht"?

Context paragraphs:
Chiang Kai-shek rifle: The Type Zhongzheng rifle (中正式), also known as the "Chiang Kai-shek/Jiang Jieshi Rifle", "Generalissimo Rifle", and "Type 24" (二四式) after the Chinese Generalissimo Chiang Kai-shek, was a Chinese-made copy of the German Mauser M1924, the forerunner of the Karabiner 98k.  Pre-production of the Chiang Kai-shek rifle started in August 1935 (year 24 of the Republican calendar, hence the Type 24).  It was later renamed the Type Zhongzheng and was in full-scale production as early as late 1935.  It was designated the Type 79 by the Chinese Communists and would often have the ideograph of Chiang defaced by them.  Although the Hanyang 88 rifle was produced in greater numbers than the Type Zhongzheng, the full standardization of the Type Zhongzheng rifle only started during the Second Sino-Japanese war.

Intermediate cartridge: An intermediate cartridge is a rifle/carbine cartridge that is less powerful than typical full-power battle rifle cartridges, such as the .303 British, 7.62×54mmR, 7.92×57mm Mauser, .30-06 Springfield or 7.62×51mm NATO, but still has significantly longer effective range than pistol cartridges.  As their recoil is significantly reduced compared to high power rifle cartridges, fully automatic rifles firing intermediate cartridges are relatively easy to control.  However, even though less powerful than a traditional full-power rifle cartridge, the ballistics are still sufficient for an effective range of 250 – , which are the maximum typical engagement ranges in modern combat.  This allowed for the development of the assault rifle, a selective fire weapon that is more compact and lighter than rifles that fire full power cartridges.  The first intermediate cartridge to see widespread service was the German 7.92×33mm Kurz used in the StG 44.  Other notable examples include the Soviet 7.62×39mm used in the AK-47 and AKM series, 5.45x39mm first used in the AK-74, and the American 5.56×45mm NATO cartridge first used in the M16.

ALFA M44: The Alfa M44 was a Spanish machine gun developed during World War II.  At this time, stocks of machine guns ran low and no outside source was available.  Non-combatant nations found that the belligerent nations were unable to supply as they were preoccupied with meeting their own wartime production needs.  It complimented the ZB-26 light machine gun, and replaced the aging Hotchkiss M1914 machine gun.  Originally chambered in 7.92×57mm Mauser, in 1955 an updated version chambered in 7.62×51mm NATO was introduced, and was subsequently issued to Spanish troops, sometimes referred to as the M55.  Along with Spain, the M44 was also prominently used by Egypt, whose army had standardised on the 7.92×57mm Mauser round.

9.3×57mm: 9.3 x 57mm Mauser was created by necking up the 7.92 x 57mm Mauser cartridge.  The 9.3×57mm (bullet diameter .365 in.) , introduced in 1900, is closely related to the 9×57mm Mauser, even though some dimensions of the cartridge case are slightly different.  The 9.3×57mm is still fairly popular among moose hunters in Scandinavia (among hunters in Sweden it is affectionately known as "potatiskastaren", the spud gun, because of the slow and heavy bullet).  Factory loaded ammunition with 232 gr and 285 gr bullets is available from Norma of Sweden.  The 9.3×57mm Norma factory load with a 232 gr bullet has a muzzle velocity of 2362 ft/s for 2875 ftlbf of energy, which makes it 10-20% more powerful than the 9×57mm.

7.92mm DS: The 7.92×107mm DS was a Polish 7.92 mm anti-tank ammunition designed specifically for use with the karabin przeciwpancerny wz.35 anti-tank rifle.  It was based on a standard 7.92×57mm Mauser cartridge, but was much longer (107 mm as opposed to the 57 mm of Mauser cartridge) and was modified to provide higher muzzle velocity and hence more penetrating power.

7×57mm Mauser: The 7×57mm cartridge, also known as the 7mm Mauser, 7×57mm Mauser, 7mm Spanish Mauser in the USA and .275 Rigby in the United Kingdom is a first-generation smokeless powder rimless bottlenecked rifle cartridge.  It was developed by Paul Mauser of the Mauser company in 1892 and adopted as a military cartridge by Spain in 1893.  It was subsequently adopted by several other countries as the standard military cartridge.  It is recognised as a milestone in modern cartridge design, and although now obsolete as a military cartridge, it remains in widespread international use as a sporting round.  The 7×57mm has been described as "a ballistician's delight".  Many sporting rifles in this calibre were made by British riflemakers, among whom John Rigby was prominent; and, catering for the British preference for calibres to be designated in inches, Rigby called this chambering the .275 bore after the measurement of a 7 mm rifle's bore across the lands.

Gewehr 98: The Gewehr 98 (abbreviated G98, Gew 98 or M98) is a German bolt-action Mauser rifle firing cartridges from a 5-round internal clip-loaded magazine that was the German service rifle from 1898 to 1935, when it was replaced by the Karabiner 98k.  The Gewehr 98 action, using stripper clip loading with the powerful 7.92×57mm Mauser cartridge, introduced advanced infantry weapon features rapidly adopted in the Anglo-American Pattern 1914 Enfield/M1917 Enfield and the Japanese Arisaka Type 38/Type 99.  The Gewehr 98 replaced the earlier Gewehr 1888 rifle as the German service rifle, first saw combat in the Boxer Rebellion, and was the main German infantry service rifle of World War I.  The Gewehr 98 saw further military use by the Ottoman Empire and Nationalist Spain.  Many have been converted to sporting use.

Karabiner 98k: The Karabiner 98 kurz (] ; "carbine 98 short", often abbreviated Kar98k or K98k) is a bolt-action rifle chambered for the 7.92×57mm Mauser cartridge that was adopted on 21 June 1935 as the standard service rifle by the German "Wehrmacht".  It was one of the final developments in the long line of Mauser military rifles.  Although supplemented by semi- and fully automatic rifles during World War II, it remained the primary German service rifle until the end of the war in 1945.  Millions were captured by the Soviets at the conclusion of World War II and were widely distributed as military aid.  The Karabiner 98k therefore continues to appear in conflicts across the world as they are taken out of storage during times of strife.

7.92×57mm Mauser: The 7.92×57mm Mauser (designated as the 8mm Mauser or 8×57mm by the SAAMI and 8 × 57 IS by the C.I.P.) is a rimless bottlenecked rifle cartridge.  The 7.92×57mm Mauser cartridge was adopted by the German Empire in 1903/1905, and was the German service cartridge in both World Wars.  In its day, the 7.92×57mm Mauser cartridge was one of the world’s most popular military cartridges.  In the 21st century it is still a popular sport and hunting cartridge that is factory-produced in Europe and the United States.

Zastava M 98/48: The Zastava M98/48 (often called Mod.98/48, Model.  98/48, Yugo K98k) was a refurbished bolt-action rifle, chambered for the 7.92×57mm Mauser, a cartridge that was temporary adopted in the years after World War II by the Yugoslav People's Army.  This design was a refurbished Mauser Kar98k rifle that had been left-over by Germans or captured by partisans during World War II.

Supporting paragraphs: Chiang Kai-shek rifle Karabiner 98k
Answer: Mauser M1924