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 USC (.45 ACP) Magazine Floor Plate - HKP-16380 HK USC Magazine Floorplate - .45 ACP
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    HK USC Magazine Floorplate - .45 ACP

    H&K Heckler & Koch

    $8.95
    H&K USC (.45 ACP) Magazine Floor Plate
    HKP-16380
    $8.95
    Add to Cart
    Qty in Cart: 0
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    $8.95
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  • Used - H&K USC (.45 ACP) Incomplete Trigger Housing - Used - HKP-16479 HK USC (.45 ACP) Incomplete Trigger Housing - Used
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    HK USC (.45 ACP) Incomplete Trigger Housing - Used

    H&K Heckler & Koch

    $73.95
    H&K USC (.45 ACP) Incomplete Trigger Housing - Used Used HK German USC Lower Receiver Empty. German HK, perfect for spare parts.
    HKP-16479
    $73.95
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    Qty in Cart: 0
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    $73.95
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  • Out Of Stock
    New - H&K 21E (7.62x51/.308) Cartridge Guide - HKP-02431 HK21E Cartridge Guide

    HK21E Cartridge Guide

    H&K Heckler & Koch

    $1,985.95
    HK German 21E Cartridge Guide - Complete New old stock HK German .308 HK21E feed mech cartridge guide.
    HKP-02431
    $1,985.95
    Out Of Stock
    Qty in Cart: 0
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    $1,985.95
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  • Out Of Stock
    New - H&K PSG1/MSG90 (7.62x51/.308) Bolt Carrier - HKP-00538 HK PSG1, MSG90 Bolt Carrier

    HK PSG1, MSG90 Bolt Carrier

    H&K Heckler & Koch

    $999.95
    HK German MSG90/PSG1 Bolt Carrier. Rare and hard to find. Now restricted by HK and will only become harder to find.
    HKP-00538
    $999.95
    Out Of Stock
    Qty in Cart: 0
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    $999.95
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  • Out Of Stock
    Used - H&K G3K/51 (7.62x51/.308) Rear Sight Drum - HKP-02049

    HK G3K, 51 Rear Sight Drum - 7.62 / .308

    H&K Heckler & Koch

    $104.95
    HK German G3K, HK51, SL6, & SL7 Rear Sight Drum Hard to find and no longer made or imported. Compatible With: G3K HK51 SL6 SL7
    HKP-02049
    $104.95
    Out Of Stock
    Qty in Cart: 0
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    $104.95
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  • New - H&K 33/53 (5.56/.223) Picatinny Rail For Barrel Shroud - HKP-18993 HK33, HK53 Picatinny Rail for Barrel Shroud
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    HK33, HK53 Picatinny Rail for Barrel Shroud

    H&K Heckler & Koch

    $199.95
    HK Picatinny Rail for HK33, HK 53 Barrel Shroud The Picatinny rail mounts directly onto the HK33, and HK53 barrel shroud, providing extra space for attaching accessories.  Compatible with: HK33 HK53 In-spec. clones and custom builds
    HKP-18993
    $199.95
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    Qty in Cart: 0
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    $199.95
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  • Out Of Stock
    New - H&K 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) 1200 Meter Rear Sight - 3rd Generation - HKP-00561 HK33, HK53, HK93, HK91, G3 1200 Meter Rear Sight - 3rd Generation

    HK33, HK53, HK93, HK91, G3 1200 Meter Rear Sight - 3rd Generation

    H&K Heckler & Koch

    $0.00
    HK German 3rd Gen 1200 Meter Rear Sight. New HK German Manufacture. No longer in production
    HKP-00561
    $0.00
    Out Of Stock
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  • Out Of Stock
    Used - H&K 93/53/33 (5.56/.223) 4 Position Trigger Group Complete (0,1,3,F) - Used - HKP-02065 HK33, HK53, HK93 Trigger Group, Complete - 4 Position 0,1,3,F - Used

    HK33, HK53, HK93 Trigger Group, Complete - 4 Position 0,1,3,F - Used

    H&K Heckler & Koch

    $2,645.95
    Heckler and Koch Used 4 Position Trigger Group Complete (0,1,3,F) for HK33, HK53, HK93  Factory German Push Pin HK Trigger Group.
    HKP-02065
    $2,645.95
    Out Of Stock
    Qty in Cart: 0
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    $2,645.95
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  • Out Of Stock
    Used - H&K 93/53/33 (5.56/.223) Rear Receiver Section - HKP-16481 HK33, HK53, HK93 Rear Receiver Section

    HK33, HK53, HK93 Rear Receiver Section

    H&K Heckler & Koch

    $79.95
    H&K 93/53/33 (5.56/.223) Rear Receiver Section Each rear receiver section is from a factory German HK 33/53 that was demilled and includes the welded on rear sight base and push pin bushing intact.
    HKP-16481
    $79.95
    Out Of Stock
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    $79.95
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  • On Sale
    New - RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH - HKP-02400 HK53K Barrel - 5.56 / .223 - 5.3" - Threaded 15x1 RH
    Add to Cart

    HK53K Barrel - 5.56 / .223 - 5.3" - Threaded 15x1 RH

    RCM

    Now: $131.95
    Was: $164.95
    RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH US made 922r compliant HK53K barrel.  Specifications: Made In The USA Threaded 15x1 RH Counts As 1 US Made 922r Compliant Part Cold Hammer Forged Steel (CHF) Built To HK Germany...
    HKP-02400
    Now: $131.95
    Was: $164.95
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    Qty in Cart: 0
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    Now: $131.95
    Was: $164.95
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  • New - H&K MP5K 40/10 4 Position (0,1,3,F) Trigger Housing - Clipped & Pinned - HKP-02414 HK MP5K Trigger Housing - 4 Position 0,1,3,F - Clipped and Pinned - .40 S&W, 10mm
    Add to Cart

    HK MP5K Trigger Housing - 4 Position 0,1,3,F - Clipped and Pinned - .40 S&W, 10mm

    H&K Heckler & Koch

    $374.95
    Heckler and Koch HK MP5 40/10 4 Position (0,1,3,F Pictogram) Trigger Housing - Clipped and Pinned This H&K MP5 40/10 trigger housing features a 4 position pictogram (0,1,3,F) and a bolt hold open cutout. The housing is clipped and pinned for secure...
    HKP-02414
    $374.95
    Add to Cart
    Qty in Cart: 0
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    $374.95
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  • Out Of Stock
    New - H&K MP5 40/10 Complete Ambidextrous Navy Trigger Pack - HKP-00980 HK MP5 Trigger Pack, Complete - Ambi Navy -.40 S&W, 10mm

    HK MP5 Trigger Pack, Complete - Ambi Navy -.40 S&W, 10mm

    H&K Heckler & Koch

    $0.00
    H&K MP5 40/10 3 Position Ambidextrous Navy Style Complete Trigger Pack Enhance your MP5 with the 3 Position Ambidextrous Navy Trigger Pack, featuring Safe, Semi, and Full (Navy) positions. This complete trigger pack is designed to fit your MP5...
    HKP-00980
    $0.00
    Out Of Stock
    Qty in Cart: 0
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    $0.00
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