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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  • On Sale
    New - Streamlight HK USPC TLR-4 Light & Laser - Green - hkp-16917 HK USPC Light and Laser Combo - TLR-4 - Green
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    HK USPC Light and Laser Combo - TLR-4 - Green

    Streamlight

    Now: $254.95
    Was: $299.95
    Streamlight TLR-4 Light and Laser - Green for HK USPC Features: White LED with Green Laser Ultra lightweight and compact Ambidextrous momentary/steady On-Off switch One handed snap-on and tighten interface keeps hands away from muzzle when...
    HKP-16917
    Now: $254.95
    Was: $299.95
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  • Out Of Stock
    New - H&K HK USPC LEM Firing Pin Block Spring - HKP-16421

    HK USP Compact LEM Block Spring - Firing Pin

    H&K Heckler & Koch

    $8.95
    H&K HK USPC LEM Firing Pin Block Spring   Compatible With: HK USP Compact 9mm - LEM HK USP Compact 40 - LEM HK USP Compact 45 ACP - LEM
    HKP-16421
    $8.95
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  • On Sale
    New - H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Notched Disk - Safe/Fire - HKP-19070 HK UMP, USC, G36, SL8 Notched Disk - S,F
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    HK UMP, USC, G36, SL8 Notched Disk - S,F

    Now: $6.95
    Was: $8.95
    HK Ratched Wheel, Notched Disk G36, SL8 0,1 (Safe & Fire) Only Compatible With: HK UMP HK USC HK G36 HK SL8 (0,1 or S,F only)
    HKP-19070
    Now: $6.95
    Was: $8.95
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  • HK German Bayonet Adapter With Hardware HK German Bayonet Adapter With Hardware
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    HK German Bayonet Adapter With Hardware

    H&K Heckler & Koch

    $159.95
    H&K German Bayonet Adapter With Hardware HK German Bayonet Adapter W/ Hardware made under a Turkish contract. The HK bayonet adapter replaces the cocking tube end cap (dust cap). Then the bayonet slides into the spring-loaded mechanism in the...
    HKP-00021
    $159.95
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  • Out Of Stock
    New - H&K Shifter Rod - Burst Trigger Packs - HKP-02054

    HK Shifter Rod - Burst Trigger Packs

    H&K Heckler & Koch

    $59.95
    German HK Trigger Pack Shifter Rod For Burst Trigger Packs
    HKP-02054
    $59.95
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  • Used - H&K MP5 & HK94 Complete Bolt Head - Used - HKP-01881-M HK MP5, HK94 Complete Bolt Head - Used
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    HK MP5, HK94 Complete Bolt Head - Used

    H&K Heckler & Koch

    $349.95 - $369.95
    H&K MP5 & HK94 Complete Bolt Head - Used Last call! These original HK German MP5 & HK94 bolt heads are now classified as restricted import items by HK making stock extremely limited. Date Code: IA - 1980 IB - 1981 IC - 1982 ID - 1983 IE -...
    HKP-01881-M
    $349.95 - $369.95
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  • New - H&K MP5, MP5K Front Sight Tower - HKP-00842 HK MP5, MP5K Front Sight Tower
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    HK MP5, MP5K Front Sight Tower

    H&K Heckler & Koch

    $169.95
    H&K MP5, MP5K Front Sight Tower This is the factory-correct part for your HK MP5, MP5K build, not a recycled or incorrect G3/91 triple frame. This is a factory HK German part. Compatible With: MP5, MP5K SP5, SP5K HK94 SP89 MAC-5 clones may require...
    HKP-00842
    $169.95
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  • On Sale
    Used - G3 A2 Adjustable Stock Extension - HKP-00872 G3 A2 Adjustable Stock Extension USA HKP-00872
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    HK G3 A2 Adjustable Stock Extension

    USA

    Now: $58.95
    Was: $69.95
    HK G3 A2 Adjustable Stock Extension Each stock extension is adjustable in 1/2" increments to enable you to achieve the proper length of trigger pull. This allows you a full 1.50" in length adjustments. These extensions are manufactured using high-impact,...
    HKP-00872
    Now: $58.95
    Was: $69.95
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  • On Sale
    HK CC9 Magazine +5 Extension Kit - 9mm HK CC9 Magazine +5 Extension Kit - 9mm
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    HK CC9 Magazine +5 Extension Kit - 9mm

    HKP HK Parts

    Now: $47.95
    Was: $59.95
    HKP HK CC9 +5 Magazine Extension US-made +5 magazine extension for the HK CC9. This low-profile base pad increases a standard 15-round CC9 magazine to 20 rounds of 9mm.  Machined from aircraft-grade hard coat anodized aluminum with steel hardware...
    HKP-22467-M
    Now: $47.95
    Was: $59.95
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    Was: $59.95
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  • HK G36 Folding Stock or Brace - HDA3 HK G36 Folding Stock or Brace - HDA3
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    HK G36 Folding Stock or Brace - HDA3

    Haga Defense

    $349.95
    HK G36 Folding Stock or Brace - HDA3 The HDA3 is a modular, USA-made stock or brace system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth...
    HKP-22357-M
    $349.95
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  • New - H&K HK USP 11mm Front Sight - HKP-21996 HK USP 11mm Front Sight
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    HK USP 11mm Front Sight

    H&K Heckler & Koch

    $37.95
    H&K HK USP 11mm Front Sight Built for a clear, consistent sight picture and improved target alignment. Compatible With: HK USP9 HK USP40 HK USP45 Does NOT fit Expert or Elite
    HKP-21996
    $37.95
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  • On Sale
    New - PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile - HKP-21806 HK91, G3 Tactical Handguard - Low Profile
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    HK91, G3 Tactical Handguard - Low Profile

    PTR

    Now: $92.95
    Was: $109.95
    PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides, with the...
    HKP-21806-M
    Now: $92.95
    Was: $109.95
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