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HK MP5SD
IN PRODUCTION
Quick Overview
Overview
The Heckler & Koch MP5SD is an integrally suppressed variant of the MP5 submachine gun. Its built-in suppressor combined with a ported barrel reduces the velocity of supersonic ammunition to subsonic levels, making it one of the quietest firearms ever produced for military service.
Calibers & Ammunition
Dimensions
Overall Length
790mm (31.1 in) stock extended
Barrel Length
146mm (5.7 in) — ported, inside suppressor
Weight
3.5 kg (7.7 lb)
Mechanical
Action Type
Roller-delayed blowback, closed bolt
Trigger Type
Selective fire (safe, semi, full auto or 3-round burst)
Sights Type
Hooded front post, adjustable diopter rear
Magazine Capacity
15 or 30 rounds detachable
Additional Information
action
Roller-delayed blowback, closed bolt
barrel
Ported barrel — bleeds gas to reduce muzzle velocity
ammunition
Standard supersonic 9mm — exits at subsonic velocity
suppressor
Integral two-stage aluminum suppressor
sound_reduction
Approximately 30+ dB reduction
How does the HK MP5SD compare?
Pick any other firearm for a side-by-side spec breakdown.