8.5"

The 5.8×42mm / DBP87 (Chinese: 弹，步枪，普通 87; pinyin: Dàn, Bùqiāng, Pŭtōng, 87, lit. 'Cartridge, Rifle, Standard, '87') is a military bottlenecked intermediate cartridge developed in the People's Republic of China. There is limited information on this cartridge, although the People's Liberation Army claims that it is superior to the 5.56×45mm NATO and Soviet 5.45×39mm cartridges.
Another variant called the DBP88 "heavy round" was designed specifically for squad automatic weapons and designated marksman rifles. The 5.8×42mm "heavy round" cartridge has the same dimensions as the standard 5.8×42mm cartridge, but utilizes a longer streamlined bullet with a heavy steel core for increased performance at extended ranges and penetration. As of 2019, all 5.8×42mm cartridge variants have been succeeded by the DBP191 variant.

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