Parts

Parts

At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.

Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.

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    New - H&K MP5 40/10 Bolt Hold Open Axle Roll Pin - HKP-01634

    HK MP5 Bolt Hold Open Axle Roll Pin - .40 S&W / 10mm

    H&K Heckler & Koch

    $8.95
    H&K MP5 40/10 Bolt Hold Open Axle Roll Pin  
    HKP-01634
    $8.95
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  • HK MP5K, SP89 Handguard - Low-Profile HK MP5K, SP89 Handguard - Low-Profile
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    HK MP5K, SP89 Handguard - Low-Profile

    PTR

    $62.95
    PTR HK MP5K, SP89 9mm Tactical Low-Profile Handguard The modular tactical forearm from PTR accommodates 2" rails on either site or bottom for mounting accessories.  Made from aircraft-grade aluminum and steel components. The handguard also boasts...
    HKP-14539-M
    $62.95
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    New - H&K MP5 & MP5K Stop Pin For Recoil Rod - HKP-17421

    HK MP5, MP5K Recoil Rod Stop Pin

    H&K Heckler & Koch

    $14.99
    HK German MP5 & MP5K Recoil Rod Stop Pin New HK German manufacture a great spare or replacement item to have on hand. Compatible With: MP5, 94, SP5 MP5K, SP89, SP5KClones or other custom builds
    HKP-17421
    $14.99
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  • Used - H&K MP5 9mm Parts Kit 100% German - A2 Stock & SEF Lower - HKP-00771 HK MP5 9mm Parts Kit 100% German - A2 Stock - SEF Lower
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    HK MP5 9mm Parts Kit 100% German - A2 Stock - SEF Lower

    H&K Heckler & Koch

    $2,239.95
    HK German MP5 9mm Used Parts Kit Complete (Minus Receiver) All MP5 Kits Include: HK 3-Lug MP5 Barrel - cold hammer forged Cocking Tube Front Sight Tower Wide Forearm - Black Bolt Group - MP5 Full Auto 2 small and 1 large Push Pin 30-Round Curved...
    HKP-00771
    $2,239.95
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  • New - H&K HK94 Red Owners Manual - HKP-00105 HK94 Owners Manual - Red
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    HK94 Owners Manual - Red

    H&K Heckler & Koch

    $18.95
    Heckler and Koch HK94 Owners Manual - Red   Original-style HK94 owner’s manual in red. Ideal for HK94 and other HK semi-auto platforms, and a useful reference for basic operation, maintenance, and safety information.   Compatible...
    HKP-00105
    $18.95
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  • New - RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 - HKP-17761 HK MP5, HK94, HK34 Barrel - 9mm - 16.175" - Threaded 1/2x28
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    HK MP5, HK94, HK34 Barrel - 9mm - 16.175" - Threaded 1/2x28

    RCM

    $249.95
    RCM MP5, HK34, HK94 Barrel - 9mm - 16.175"- Threaded 1/2x28 Each barrel is meticulously crafted from premium cold hammer forged (CHF) 41V45 steel, expertly profiled and chambered with a 16-flute chamber profile. Finished with a highly durable nitrided...
    HKP-17761
    $249.95
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  • HK416, MR556 Upper Receiver - Stripped - No Forward Assist HK416, MR556 Upper Receiver - Stripped - No Forward Assist
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    HK416, MR556 Upper Receiver - Stripped - No Forward Assist

    H&K Heckler & Koch

    $489.99
    HK416, MR556 Upper Receiver - Stripped - No Forward Assist Genuine HK HK416 upper receiver designed for HK416 and MR556 rifle platforms. This stripped receiver does not include a forward assist or ejection port door. Compatible With HK416, MR556 MR223
    HKP-22506
    $489.99
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  • HK P30, P30L Parabellum Loadout HK P30, P30L Parabellum Loadout
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    HK P30, P30L Parabellum Loadout

    HKP HK Parts

    $0.00
    HK P30, P30L Parabellum Loadout Whether you are a fan of the movie or just want the best upgrades for your P30, the Parabellum Loadout checks all the boxes.  Kit your HK out to your preference with our select go-fast upgrades. Options: HKP...
    HKP-22469-KIT
    $0.00
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  • HK91, G3 Folding Stock - HDA3 HK91, G3 Folding Stock - HDA3
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    HK91, G3 Folding Stock - HDA3

    Haga Defense

    $349.95
    HDA3 Folding Stock for HK91, G3 The HDA3 is a modular, USA-made stock system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth adjustability, and...
    HKP-22356-M
    $349.95
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    HK G36 Cheek Riser for Folding Stock HK G36 Cheek Riser for Folding Stock

    HK G36 Cheek Riser for Folding Stock

    Haga Defense

    $82.00
    Haga Defense Cheek Riser for HK G36, HK G36C, HK G36K, HK G36 .22LR Folding Stocks Cheek riser for HK G36 rifles and compatible stocks. Raises cheek weld by ~20mm for proper sight alignment with iron sights, red dots, and low-mounted optics. Made from...
    HKP-22359
    $82.00
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  • F5 HK MP5 ACR Stock - Picatinny Mount F5 MFG HKP-22350-M HK MP5, SP5 ACR Folding Stock With Adapter - Picatinny
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    HK MP5, SP5 ACR Folding Stock With Adapter - Picatinny

    F5 MFG

    $314.95
    F5 HK MP5/SP5 ACR Folding Stock w/Adapter - Picatinny The HKP picatinny end cap with the F5 ACR stock allows users to easily swap this, and other stocks, between their MP5 and other platforms.  This drop-in ready assembly attaches with the MP5's...
    HKP-22350-M
    $314.95
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  • HK VP9A1 K Magazine Replacement Kit H&K Heckler & Koch HKP-22300 HK VP9A1 K Magazine Replacement Kit H&K Heckler & Koch HKP-22300
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    HK VP9A1 K Magazine Replacement Kit

    H&K Heckler & Koch

    $23.95
    HK VP9A1K Magazine Replacement Kit Magazine replacement kit with all necessary components: spring, floorplate, and locking plate. Compatible With: HK VP9A1 K
    HKP-22300
    $23.95
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