Jisho

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4.6x30mm
Wikipedia definition
1. HK 4.6×30mmThe HK 4.6×30mm cartridge is a type of ammunition used in the Heckler & Koch MP7 Personal Defense Weapon (PDW) and by the canceled HK UCP pistol. It is designed to minimize weight and recoil while increasing penetration of body armor. It features a bottlenecked case and a pointed, steel-core, brass-jacketed bullet.
Read “HK 4.6×30mm” on English Wikipedia
Read “4.6x30mm弾” on Japanese Wikipedia
Read “HK 4.6×30mm” on DBpedia

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