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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  • Out Of Stock
    New - H&K HK P2000 9mm Recoil Spring Assembly - HKP-01559

    HK P2000 9mm Recoil Spring Assembly

    H&K Heckler & Koch

    $105.95
    HK P2000 9mm Recoil Spring Assembly  Spring guide rod with buffer complete. Compatible With: HK P2000 9mm
    HKP-01559
    $105.95
    Out Of Stock
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    $105.95
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  • HK45 Thread Protector - .578x28 RH - Knurled HK45 Thread Protector - .578x28 RH - Knurled
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    HK45 Thread Protector - .578x28 RH - Knurled

    HKP HK Parts

    $14.95
    HKP HK Parts HK45 Thread Protector - Threaded .578x28 RH - .45 ACP The new US-made .45 ACP tactical thread protector, the cap fits all HK45 full size & compact barrels threaded .578x28 RH thread. A must-have item to protect your threaded barrels,...
    HKP-17623
    $14.95
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    $14.95
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  • Out Of Stock
    New - MI HK93/33 M-LOK Handguard - Black - HKP-18440 HK33, HK93 Handguard - M-LOK

    HK33, HK93 Handguard - M-LOK

    MI Midwest Industries

    $175.95
    MI HK93/33 M-LOK Handguard Brand new Midwest Industries M-LOK handguard for your HK93, HK33, G3K or similar clone. This is also the correct forearm to use on PTR models that use a shorter 9" length or carbine length forearm. Features: Made in the USA,...
    HKP-18440
    $175.95
    Out Of Stock
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    $175.95
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  • New - H&K HK MP7 Compression Spring - HKP-16782
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    HK MP7 Compression Spring

    H&K Heckler & Koch

    $5.95
    H&K HK MP7 Compression Spring
    HKP-16782
    $5.95
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    $5.95
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  • New - HK G36/SL8 (5.56/.223) Bolt Head Ejector Pin - HKP-18372 HK G36, SL8 Bolt Head Ejector Pin
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    HK G36, SL8 Bolt Head Ejector Pin

    $6.95
    HK G36/SL8 (5.56/.223) Bolt Head Ejector Pin HK Ejector roll pin for G36, SL8 bolt heads. This item is the pin that holds the ejector & ejector spring in place. A common wear & replacement item and a must have when doing bolt head maintenance...
    HKP-18372
    $6.95
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    $6.95
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  • New - H&K MP5K/SP89/SP5K 9mm Rear Sight Drum - HKP-01110
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    HK MP5K, SP89, SP5K Rear Sight Drum - 9mm

    H&K Heckler & Koch

    $79.95
    HK German MP5K, SP89 and SP5K Factory Rear Sight Drum New factory correct German HK MP5K, SP89, and SP5K rear sight drum. Compatible With: MP5K SP89 SP5K Other custom builds or clones Please Note: Many shooters prefer to upgrade to the MP5 rear...
    HKP-01110
    $79.95
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    $79.95
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  • New - HKP MP5, MP5K Rear Sight Base - HKP-02450 HK MP5, MP5K Rear Sight Base
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    HK MP5, MP5K Rear Sight Base

    HKP HK Parts

    $19.95
    HKP HK Parts Rear Sight Base - Weldment for HK MP5 and HK MP5K The only factory-correct sight base with the factory HK German side axis grooves.  Compatible With: MP5, MP5K SP89, HK94 MP5 40, MP5 10 MAC-5 clones may require custom fitment...
    HKP-02450
    $19.95
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    $19.95
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  • On Sale
    Refurbished - HK91, G3 7.62x51 / .308 15 Round Steel Magazine - Refinished - BLEMISHED - HKP-21922-B HK91, G3 Magazine - 15 Round - Refinished, BLEMISHED
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    HK91, G3 Magazine - 15 Round - Refinished, BLEMISHED

    H&K Heckler & Koch

    Now: $44.95
    Was: $84.95
    Heckler and Koch 15 Round Steel Magazine, Refinished and marked BLEMISHED, for HK91, G3 7.62x51 / .308  MAGAZINE BODIES HAVE PITTING - CONDITION MAY VARY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR...
    HKP-21922-B
    Now: $44.95
    Was: $84.95
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    Now: $44.95
    Was: $84.95
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  • New - HKP HK G36 Picatinny Adapter - HKP-21665 HK G36 Picatinny Adapter
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    HK G36 Picatinny Adapter

    HKP HK Parts

    $129.95
    HKP HK G36 Picatinny Adapter Transform your G36 with our unbeatable rail stock adapter, engineered to seamlessly attach any 1913 Style Stock or brace. Our innovative design ensures the 1913 stocks & braces lock in securely, offering superior cheek...
    HKP-21665
    $129.95
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    $129.95
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  • New - HKP HK USP 9mm +10 Magazine Extension - HKP-21382-M HK USP 9mm +10 Magazine Extension
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    HK USP 9mm +10 Magazine Extension

    HKP HK Parts

    $69.95
    Magazine Extension - +10 - HK USP 9mm  Easy to install. Simply add the mag extension to your existing mag body and follower. No gunsmithing needed. Made 100% in the USA out of aircraft-grade, hard-coat anodized aluminum with steel hardware. Ultra...
    HKP-21382-M
    $69.95
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    $69.95
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  • New - H&K / HKP HK MP5, 94 Trigger Group Engraved 3 Position Navy Housing 0,1- Safe, Semi Only - HKP-17237 HK MP5, 94 Trigger Group - Engraved 3 Position Navy Housing 0,1- Safe, Semi Only
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    HK MP5, 94 Trigger Group - Engraved 3 Position Navy Housing 0,1- Safe, Semi Only

    $749.95
    H&K / HKP HK MP5, 94 Trigger Group Engraved 3 Position Navy Housing 0,1- Safe, Semi Only Finally, a lower cost alternative to the spendy & hard to find all German HK FBI or 0,1 ambidextrous trigger group in a 3 position Navy factory German HK...
    HKP-17237
    $749.95
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    $749.95
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  • New - HKP Picatinny Rail Mount for Front Sight Tower - Red - HKP-20800 Picatinny Optic Mount, Front Sight Tower - Red
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    Picatinny Optic Mount, Front Sight Tower - Red

    $39.95
    HKP Picatinny Rail Mount for Front Sight Tower - Red HK Picatinny rail mount that replaces the forearm (small) push pin and mounts to the side of the front sight tower and allows you to add sling swivels, lasers, lights & accessories. This add on is...
    HKP-20800
    $39.95
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    $39.95
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