The Heckler & Koch MP5 (German: Maschinenpistole 5, lit. 'Submachine gun 5') is a submachine gun developed in the 1960s by German firearms manufacturer Heckler & Koch.

Where other submachine guns have to use special subsonic ammunition for silenced use, the MP5 SD fires supersonic ammunition in the subsonic range (<340 m/s). It is also one of the most precise silenced submachine guns in its class.

The MP5K is the ultimate close quarters weapon. At 4.4 pounds (2 kilograms) and less than 13 inches (330 mm) long, the MP5K is easily concealed and carried. Roughly the size of a large handgun — when compared to a full-size MP5 — the MP5K is characterized by a short length receiver and short, flush mount 4.52 inch (115 mm) barrel.

mp5k-pdw的主要特点是安装有美国制的右侧折叠式塑料枪托，并稍为延长 枪管，在枪管前端有3个凸笋，这样用户可以根据需要而附加消焰器或消声器之类的附件。

The MP5K-PDW accepts the wide selection of optional MP5K trigger groups — including single fire only, full automatic, 2-round, and 3-round burst options. The MP5K-PDW’s modular design enables a variety of forearms, sight mounts, magazines, and other accessories to be installed for maximum mission flexibility.

MP5冲锋枪（英文：MP5 Submachine gun）是由德国HK公司（Heckler &Koch）设计制造的冲锋枪。 MP5冲锋枪口径为9毫米，全枪长度680毫米，枪管长225毫米，空枪重量2.54千克，可采用15发、30发、100发弹鼓供弹。

The MP5K is a compact submachine gun designed for vehicle operators, air crew members, security details, and others who require a small, but powerful weapon.

2020年12月21日 · Notable series variants as part of the Heckler & Koch HK MP5K (Kurz) Submachine Gun (SMG) / Personal Defense Weapon (PDW) / Machine Pistol family line. HK MP5K - Base model HK MP5KA1 - Features smaller iron sights and smoother finish on …

The MP-5K compact submachine gun (K stands for “Kurz” in German, that means “short”) had been developed by the German company Heckler-Koch for various counter-terror and security units, that needed a short-range weapon with serious firepower.