MP5K / SP5K Series
Discover the most comprehensive selection of HK MP5K and SP5K parts at HKP. From bolt carrier groups and barrels to trigger packs and magazines, we provide all the HK parts you need to build, upgrade, or maintain your firearm. Whether you're enhancing your MP5K with 922r compliant parts or looking for the perfect SP5K flash hider, our top-quality components are designed for precision, reliability, and performance. Trust HKP for all your MP5K and SP5K parts and accessories.
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HK MP5K Binary Trigger Group – 2 Round Engraved Binary Housing
HKP HK Parts / FA Franklin Armory
$1,449.95 - $1,499.95Franklin Armory / HKP HK MP5K Binary Trigger Group – 2 Round Engraved Binary Housing Our latest and greatest binary trigger group was delivered with a factory HK German housing professionally engraved and painted with a 2-round burst pictograph to...$1,449.95 - $1,499.95 -
HK MP5K, SP5K Binary Trigger Group - SEF Ambi - BFSIII - 9mm - Contoured
FA Franklin Armory
$1,499.95 - $1,549.95Franklin Armory HK MP5K - BFSIII HK-C1 – Binary Trigger Group – SEF – Contoured In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the market...$1,499.95 - $1,549.95 -
On Sale
HK MP5K Parts Kit - 9mm - Pistol Build
HKP HK Parts
Now: $1,511.96Was: $1,889.95MP5K, MP5K-N Style Pistol Build Kit Complete The finest USA and German-made parts for a complete parts kit for an MP5K, MP5K-N pistol build. Each Kit Includes The Following HK Parts: Barrel - 5.5" button rifled, 3-lugged & threaded 1/2x28 with...Now: $1,511.96Was: $1,889.95 -
HK MP5K Binary Trigger Group - Ambi - BFSIII - 9mm
FA Franklin Armory
$1,899.95Franklin Armory HK MP5K - BFSIII HK-C1 – Binary Trigger Group – Ambi 3 Position Housing In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the...$1,899.95 -
On Sale
HK MP5K/SP89 9mm Full Auto Carrier
H&K Heckler & Koch
Now: $1,754.96Was: $1,949.95HK German MP5K Full Auto Bolt Carrier - Latest Style Contour Each bolt carrier is designed to fit all HK MP5K's, SP89, and K-style clones seamlessly. Crafted from the latest tungsten-filled HK German production, these are the final units available,...Now: $1,754.96Was: $1,949.95 -
On Sale
HK MP5, MP5K Bolt Group - Complete - 9mm - Suppressed
H&K Heckler & Koch
Now: $2,676.60Was: $2,974.00H&K MP5K 9mm Complete Bolt Group - Suppressed Introducing an incredible opportunity: a fully assembled Factory German F/A MP5K bolt group, showcasing the highly coveted 80 degree #28 German locking piece. This is the definitive drop-in...Now: $2,676.60Was: $2,974.00 -
On Sale
HK MP5K Parts Kit - 10mm - Pistol Build
HKP HK Parts
Now: $1,511.96Was: $1,889.95HKP MP5K 10mm Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and suppressors...Now: $1,511.96Was: $1,889.95 -
HK MP5K/SP5K/SP89 Semi-Auto 3 Position Trigger Group- Clipped & Pinned
H&K Heckler & Koch
$1,899.95HK Semi Auto 3 Position Trigger Group- Clipped & Pinned This HK 3-position trigger housing will give the look and feel of a full auto 3-position trigger group but is set in a semi-auto trigger pack. All HK German Genuine parts. Compatible With: HK...$1,899.95 -
On Sale
HK MP5K Binary Pistol Build Complete Limited Edition Kit
HKP HK Parts
Now: $2,390.36Was: $2,987.95Limited Edition Parts Kit - MP5K With Binary Trigger Group Our limited edition parts kit will include the highly desirable Binary 3 position Navy trigger group with a universal style housing that will accommodate for a SP5K style semi auto shelf and a...Now: $2,390.36Was: $2,987.95 -
HK MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group
H&K Heckler & Koch
$2,499.95HK MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group HK German MP5K 3 Position 0,1,F Navy Ambidextrous Trigger Group For MP5K, MP5KN or MP5K PDW. New HK German manufacture. This is the real deal. Only a few on hand and once they are all gone there...$2,499.95 -
On Sale
HK MP5K Parts Kit - .40 S&W - Pistol Build
Now: $1,646.96Was: $1,829.95HKP MP5K .40 S&W Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to accept a wide variety of muzzle devices and...Now: $1,646.96Was: $1,829.95