Country of origin
9 x 19 mm Parabellum
Length (with folded stock)
300 - 330
Cyclic rate of fire
Practical rate of fire
40 - 120 rpm
Range of effective fire
25 - 75 m
silenced submachine gun was developed by the German Heckler & Koch
(HK) company in the early 1970s. It is a modification of a popular
submachine gun, intended for special operation forces. The "SD"
stands for "Schalldampfer", German for "sound suppressor".
This weapon was reportedly adopted in 1974. Eventually the MP5SD
has been adopted by the US Navy Seals and a number of other special
forces and law enforcement units from all around the world. This silenced
submachine gun is actively used to this day. It proved to be a high-quality, reliable and accurate weapon.
comes with integral non-detachable silencer. The silencer is made of
aluminum. The MP5SD is a
blowback-operated weapon that fires from a closed bolt and has a
roller-delay mechanism, similar to that of the Heckler & Koch
automatic rifle. The MP5SD is chambered for the widespread 9x19
mm Parabellum ammunition. This weapon can use standard ammunition,
rather than special subsonic rounds.
has a shorter barrel than the original MP5 submachine gun. The
barrel has 30 ports, that divert escaping gasses into the
suppressor. As a result the bullet has lower velocity and leaves the
muzzle at subsonic velocity. The bullet does not generate sonic
shock wave in flight.
units of the HK MP5SD are available with various fire mode options,
including semi-auto, full-auto and 2- or 3-round burst firing modes. Modern
versions have ambidextrous fire mode controls, mounted on either
side of the receiver. Cocking handle is mounted at the front of the
receiver, on the left side.
silenced submachine gun is normally fed from the curved 30-round
magazines. Early models used straight magazines. This weapon is also compatible with
Heckler & Koch 15-, or 100-round capacity
version of this weapon
has a collapsible sliding buttstock. Though there are versions with
fixed synthetic buttstock or without buttstock.
comes with diopter-type sights that are similar to other
contemporary Heckler & Koch models. The sights consist of front post
and rear diopter. Maximum sighting range is 150 m. Various red-dot,
optical or night sights can be mounted on a quick-detachable clamp.
Effective range of fire is up to 75 meters.
version without buttstock.
version with a solid buttstock.
version with a collapsible metal buttstock.
version without buttstock and new ambidextrous trigger mechanism.
version with a solid buttstock and new ambidextrous trigger
version with a collapsible metal buttstock and new ambidextrous
version of the MP5SD5 for the US Navy. It has a so called "Navy" ambidextrous
tritium-illuminated sight dots and fixed buttstock. Furthermore it
has a larger suppressor, developed by the US Knights Armament
company. The design of this suppressor allows the weapon to be fired
with water inside. This feature allows to use this weapon in the
water and exiting from the water. This silenced submachine gun has
a modified cocking handle to account for a larger suppressor.
version of the MP5SD6 for the US Navy. It is similar to the
MP5SD-N1, but has a collapsible metal buttstock.