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 HK 416 Full Auto Ambidextrous 3-Position Selector Lever Kit - HKP-17552 HK416 Selector Lever Kit - Full Auto - Ambidextrous - 3-Position

    HK416 Selector Lever Kit - Full Auto - Ambidextrous - 3-Position

    H&K Heckler & Koch

    $139.95
    HK416 Full Auto Ambi Selectors Kit - German HK Each set comes complete with everything you will need to upgrade your HK 416 to an ambi selector lever set up. Factory correct German HK and all steel construction. Includes: 2 X selector levers 2 X roll...
    HKP-17552
    $139.95
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  • New - RCM HK G3K Locking Piece #18 - 50 Degree - HKP-02522 HK G3K Locking Piece #18 - 50 Degree
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    HK G3K Locking Piece #18 - 50 Degree

    RCM

    $49.95
    RCM HK G3K Locking Piece #18 - 50 Degree The #18 LP is the factory-correct locking piece for G3K style builds or other custom builds. The locking piece is the timing mechanism that a delayed roller lock firearm uses to tell the firearm when to unlock and...
    HKP-02522
    $49.95
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  • New - H&K HK P30, P30L, P30S, USPC, P2000 - 9mm Recoil Spring - HKP-01560
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    HK P30, P30L, P30S, USP Compact, P2000 - 9mm Recoil Spring

    H&K Heckler & Koch

    $34.95
    Recoil Spring New HK German manufacture recoil spring for guide rod. A must-have spare part and a common consumable item. Compatible With: USP Compact 9mm P2000 9mm P30, P30L & P30S 9mm models
    HKP-01560
    $34.95
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    New - HKP SP5K 9mm Drop In Paddle Mag Release Upgrade Kit - HKP-18192 HK SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle

    HK SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle

    HKP HK Parts

    $74.95
    HK SP5K Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit No modifications, no refinishing...complete drop-in kit included. New USA made busing for a drop-in install kit for the HK SP5K. This kit will allow any end-user to quickly,...
    HKP-18192
    $74.95
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  • New - Snap Hook 1" - Universal - HKP-00730 Sling Snap Hook 1" - Universal
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    Sling Snap Hook 1" - Universal

    USA

    $4.95
    Snap Hook 1" This is a 1" HK-style snap hook for sling or other custom projects. We also offer 1.25" HK sling hooks, as these are great spare parts to have on hand.
    HKP-00730
    $4.95
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    New - H&K 9mm Barrel Flute Cleaning Brush - HKP-00138

    Barrel Flute Cleaning Brush - 9mm

    H&K Heckler & Koch

    $34.95
    Heckler and Koch Barrel Flute Cleaning Brush for 9mm This HK-manufactured brush is a must-have for the proper care of your HK 9mm rifle/pistol, as the flutes need to be clean and free of carbon for proper function. A great cleaning tool to have on hand...
    HKP-00138
    $34.95
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  • New - AC-Unity HK PSG1 Style Sniper Pistol Grip - HKP-21628 HK G3 Pistol Grip - PSG1 Sniper Style
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    HK G3 Pistol Grip - PSG1 Sniper Style

    AC-Unity

    $39.95
    AC-Unity HK PSG1 Style Sniper Pistol Grip The new AC Unity Pistol Grip/Sniper Grip is a great upgrade if you want the PSG1 style grip frame for your HK firearm. The grip features an ambidextrous palm shelf for increased stability and weapon control...
    HKP-21628
    $39.95
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  • New - H&K HK VP9 Match OR Slide Conversion - HKP-21096 HK VP9 Match OR Slide Conversion
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    HK VP9 Match OR Slide Conversion

    H&K Heckler & Koch

    $549.00
    Slide Conversion VP9 Match OR - Complete Elevated Sights The VP9 match optics-ready kit quickly and easily converts a standard VP9 or VP9-B to a competition-ready match optics-ready model. No additional parts or tools are needed for assembly. Just swap...
    HKP-21096
    $549.00
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  • New - KCI 30 Round MP5 9mm Magazine - 5 Pack - HKP-22057 HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - 5 Pack
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    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - 5 Pack

    KCI

    $184.95
    KCI 30 Round HK MP5 9mm Magazine - 5 Pack Features: Latest generation and factory fresh, individually sealed magazine 30-round capacity 9mm caliber marked (9mm x 19) Curved for more reliable feeding with steel chrome follower All steel...
    HKP-22057
    $184.95
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  • New - HKP MP5 RMR Rear Sight Optic Mount - HKP-20506 HK MP5 Optic Mount - RMR - Rear Sight
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    HK MP5 Optic Mount - RMR - Rear Sight

    HKP HK Parts

    $97.95
    HK MP5- RMR Optic Mount: The  mounting solution to properly mount your RMR directly to the rear sight base on an MP5 or any other receiver that utilizes the same style rear sight base. The mount is the perfect height to co-witness your RMR with your...
    HKP-20506
    $97.95
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  • New - POF HK MP5 9mm SEF (0,1,30 Pictogram) Housing - Push Pin - HKP-19826 POF HK MP5 9mm SEF (0,1,30 Pictogram) Housing - Push Pin
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    POF HK MP5 9mm SEF (0,1,30 Pictogram) Housing - Push Pin

    POF

    $89.95
    POF HK MP5 9mm SEF (0,1,30 Pictogram) Housing - Push Pin This is a H&K contract SEF grip housing. The Housingg features the classic finger grooves. This part is not HK German quality, but a great value for the price. Specifications: Push Pin SEF...
    HKP-19826
    $89.95
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  • New - H&K Heavy Trigger Return Spring For HK P30/P30L - HKP-02195
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    HK P30, P30L Trigger Return Spring - Heavy

    H&K Heckler & Koch

    $13.95
    H&K Heavy Trigger Return Spring For HK P30/P30L Compatible With: HK P30 HK P30 V3 HK P30L HK P30L V3
    HKP-02195
    $13.95
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