MP5K / SP5K Series

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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  • New - B&T HK MP5K Adapter for Folding Stock - HKP-22081 HK MP5K Adapter - Folding Stock
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    HK MP5K Adapter - Folding Stock

    B&T Brugger & Thomet

    $160.00
    B&T HK MP5K Adapter for Folding Stock Upgrade your MP5K platform with precision Swiss engineering. The B&T (Brügger & Thomet) HK MP5K Adapter for Folding Stock is designed to provide a secure and reliable mounting interface for...
    HKP-22081
    $160.00
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    New - Magpul M-Lok Paraclip Sling Mount - HKP-21874 M-Lok Paraclip Sling Mount

    M-Lok Paraclip Sling Mount

    Magpul

    $19.95
    Magpul M-Lok Paraclip Sling Mount The M-LOK Paraclip Sling Mount is a steel clip-in sling mount for M-LOK compatible systems. It is constructed of high-grade, precision cast steel and has an extremely durable QPQ salt bath nitride finish. With a...
    HKP-21874
    $19.95
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    $19.95
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  • New - SB Tactical HK MP5K SBA5 Pistol Stabilizing Brace - HKP-21795-M HK MP5K Pistol Stabilizing Brace - SBA5
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    HK MP5K Pistol Stabilizing Brace - SBA5

    SB Tactical

    $248.95
    SB Tactical HK MP5K SBA5 Pistol Stabilizing Brace SB Tactical combined with our MP5K end cap creates a true drop-in brace, perfect for those seeking the flexibility that the SBA5 pistol stabilizing brace offers. With a 5-position adjustable length, this...
    HKP-21795-M
    $248.95
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  • New - RCM HK SP5K Semi Auto Carrier - HKP-20983 HK SP5K Carrier - Semi Auto
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    HK SP5K Carrier - Semi Auto

    RCM

    $159.95
    RCM HK SP5K Semi Auto Carrier SP5K semi-auto carrier machined completely from billet ordnance steel. RCM US made SP5K carrier is made to the most updated and latest SP5K  specs and more. Tungsten filled, heat treated, phosphate finish and all...
    HKP-20983
    $159.95
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  • New - HK Universal Polymer 3.25" Rail - hkp-18489 HK Universal Polymer 3.25" Rail
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    HK Universal Polymer 3.25" Rail

    H&K Heckler & Koch

    $59.95
    HK Universal Polymer Rail With Screws for the G36E, SL8, USC, UMP   HK German manufacture. New universal picatinny rail for forward section or forearm.   Compatible With: G36E SL8 USC UMP All variants Specifications: Length: 3.25"
    hkp-18489
    $59.95
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  • New - HKP HK MP5, MP5K 9mm, Ambidextrous 0,1 Trigger Pack - ENHANCED 5-6 LBS Trigger Pull - HKP-20313 HK MP5, MP5K Trigger Pack - 9mm - Ambidextrous 0,1 - 5-6lb Trigger Pull
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    HK MP5, MP5K Trigger Pack - 9mm - Ambidextrous 0,1 - 5-6lb Trigger Pull

    HKP HK Parts

    $539.95
    HKP/H&K MP5/MP5K 9mm 2 Position 0,1 Ambidextrous Trigger Pack Our enhanced trigger packs begin as full auto packs and are professionally converted to BATFE specifications, ensuring compliance and quality. These trigger packs are machined to achieve a...
    HKP-20313
    $539.95
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  • Out Of Stock
    New - H&K MP5K 9mm SEF Contoured Trigger Group - Push Pin - F/A - HKP-01513 HK MP5K 9mm SEF Contoured Trigger Group - Push Pin - F/A

    HK MP5K 9mm SEF Contoured Trigger Group - Push Pin - F/A

    H&K Heckler & Koch

    $0.00
    HK German MP5K SEF Trigger Group SEF Marked. The trigger housing has contoured finger grooves for ultimate comfort. This is a factory push pin full-auto trigger pack assembly setup for 9mm MP5K or PDW sub guns. Assembled from a factory German HK using a...
    HKP-01513
    $0.00
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  • New - MKE AP5-P/M Handguard with Hand Stop - HKP-22221 Century Arms AP5-P, AP5-M Handguard with Handstop
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    Century Arms AP5-P, AP5-M Handguard with Handstop

    MKE

    $34.95
    MKE AP5-P/M Handguard with Hand Stop MKE handguard for the MKE manufactured Century AP5-P and AP5-M.  Please note: Will fit other MP5K style receivers with some slight fitting.  Compatible With: MKE/Century Arms AP5-P MKE/Century Arms...
    HKP-22221
    $34.95
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  • New - HKP HK MP5/K Thread Protector - Threaded 1/2x32 RH - HKP-21829 HK MP5, MP5K Thread Protector - 1/2x32 - RH
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    HK MP5, MP5K Thread Protector - 1/2x32 - RH

    HKP HK Parts

    $14.95
    HKP HK MP5/K Thread Protector - Threaded 1/2x32 RH This MP5/K thread protector is designed to safeguard your barrel threads from damage when a muzzle device is not in use. Made in the USA from high-quality steel, it offers durability and a precise fit...
    HKP-21829
    $14.95
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  • New - B&T Aimpoint ACRO / NANO 39mm QD Mount - HKP-21761 Picatinny Optic Mount - 39mm - Aimpoint ACRO / NANO
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    Picatinny Optic Mount - 39mm - Aimpoint ACRO / NANO

    B&T Brugger & Thomet

    $85.00
    B&T Aimpoint ACRO / NANO 39mm QD Mount The B&T ACRO NANO optic mount is a universal QD mount for any firearm featuring a Picatinny top rail.  Keep your optic profile compact with this Swiss made mount. Compatible With: Any firearm featuring...
    HKP-21761
    $85.00
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    $85.00
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  • New - Holosun 510C & HM3X Combo - HKP-21657 Picatinny Optic Mount - Holosun 510C, HM3X Combo
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    Picatinny Optic Mount - Holosun 510C, HM3X Combo

    Holosun

    $599.95
    Holosun 510C & HM3X Combo - Optic & Magnifier  The HS510C is a versatile open reflex optic designed for long gun applications. HS510C is at home on carbines, PCCs, and shotguns due its durable design. HS510C features and aluminum housing...
    HKP-21657
    $599.95
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  • HK MP5K Trigger Housing - AR Match
HK MP5K Trigger Housing - AR Match
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    HK MP5K Trigger Housing - AR Match

    Magpul

    $349.95
    Magpul HK MP5K AR Trigger Housing This match-grade trigger housing is expertly crafted to elevate the performance of your HK MP5K. Our enhanced HK-AR Navy ambidextrous lower housing and Magpul MOE grip not only provide a modern aesthetic but also feature...
    HKP-21379-M
    $349.95
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    $349.95
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