Description
This is an original Heckler & Koch HK MP5K Full Auto Trigger Pack with Housing, designed for use with the iconic MP5K submachine gun platform. The trigger pack is a complete factory assembly, housed in the compact polymer “K” style grip housing specifically shaped for the shorter MP5K receiver.
The unit includes the full-auto fire control group, providing safe, semi-automatic, and fully automatic fire modes (depending on the selector markings: typically SEF or Navy-style pictograms). Built to HK’s exacting standards, the pack contains the hammer, sear, disconnector, springs, and selector components, all properly fitted and ready for installation.
Key Features
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Authentic HK factory part – not aftermarket.
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MP5K-specific housing – compact polymer housing compatible with MP5K/SP89/MP5K clones.
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Full Auto Fire Control Pack – includes hammer, sear, and complete internals.
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Selector markings – often SEF (Safe, Semi, Full) or Navy pictogram depending on production variant.
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Durable construction – reinforced polymer housing with steel internals.
Compatibility
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Designed for HK MP5K / SP89 and licensed clones.
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Will not fit standard full-size MP5 housings without modification.
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NFA Item: Installation on a host firearm requires proper ATF registration (Sear, Registered Receiver, or Qualified SBR host).
Note
This trigger pack is sold as a full-auto component. Possession or installation in the United States requires appropriate federal registration under the National Firearms Act (NFA). Ensure compliance with all federal, state, and local laws before purchase or installation.
