Wiki:
Belgium
FN Mle D featuring a quick-change barrel
A variant known as the FN Mle 1930 was developed in 7.65×53mm Belgian Mauser by FN Herstal and adopted by the Belgian army. The Mle 1930 is basically a licensed copy of the Colt Automatic Machine Rifle, Model 1925 (R 75).[31] The Mle 1930 has a different gas valve and a mechanical rate-reducing fire control mechanism designed by Dieudonné Saive, located in the trigger guard-pistol grip housing.[31] Some of these FN rate reducer mechanisms and pistol grip housings were later purchased by Springfield Armory for evaluation and possible adoption on a replacement for the M1918.[18] The weapon also had a hinged shoulder plate and was adapted for use on a tripod mount. In 1932 Belgium adopted a new version of the FN Mle 1930 allocated the service designation FN Mle D (D—demontable or "removable"), which had a quick-change barrel, shoulder rest and a simplified take-down method for easier cleaning and maintenance.[32] The Mle D was produced even after World War II in versions adapted for .30-06 Springfield (for Belgian service) and 7.92×57mm Mauser ammunition (for Egyptian service).[25] The final variant in Belgian service was the Model DA1 chambered for the 7.62×51mm NATO cartridge and feeding from the 20-round magazines for the FN FAL battle rifle.[32]
China
The Chinese Nationalist Army used the FN M1930 throughout the Second Sino-Japanese War. 29,550 were bought from Belgium between 1933 and 1939. The Chinese BAR was chambered for the German 7.92×57mm Mauser round, the standard rifle cartridge of the National Revolutionary Army.[35] After the outbreak of the Pacific War, the Chinese Expeditionary Army in Burma was equipped with American BARs. Towards the end of the war small quantities of American equipment, including the BAR, made their way into mainland China.
