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 UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger Spring - HKP-01864

    HK UMP, G36 Trigger Spring

    H&K Heckler & Koch

    $6.95
    H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger Spring Trigger Spring For All HK UMP & G36 Lowers
    HKP-01864
    $6.95
    Out Of Stock
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    $6.95
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  • New - H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - HKP-01757 HK91, G3 SEF Navy Style Trigger Housing - Push Pin
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    HK91, G3 SEF Navy Style Trigger Housing - Push Pin

    H&K Heckler & Koch

    $74.95
    H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin This German-made Heckler & Koch housing comes in black polymer. This part is compatible with all push pin G3 style firearms. It can also be used for other...
    HKP-01757
    $74.95
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  • Used - H&K 91/G3 (7.62x51/.308) Fixed Stock with Enhanced Heavy Buffer - OD Green - Surplus - HKP-18932 HK91, G3 Fixed Buttstock with Enhanced Heavy Buffer - OD Green - Surplus
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    HK91, G3 Fixed Buttstock with Enhanced Heavy Buffer - OD Green - Surplus

    H&K Heckler & Koch

    $129.95
    HK 91, G3 Fixed Stock with Enhanced Heavy Buffer Installed - OD Green - Surplus Used Olive Drab green German surplus stock complete with Enhance DMR buffer installed. Ready to drop in on your HK or clone rifle. Used in perfect working condition. Each...
    HKP-18932
    $129.95
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  • On Sale
    New - HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel - HKP-17798
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    HK33, HK53, HK93 Firing Pin - Stainless Steel

    HKP HK Parts

    Now: $19.95
    Was: $24.95
    HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33
    HKP-17798
    Now: $19.95
    Was: $24.95
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  • On Sale
    Used - H&K German MP5 SEF F/A Trigger Group - USED - HKP-13932 HK MP5 Trigger Group - SEF Full Auto - Contoured- USED
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    HK MP5 Trigger Group - SEF Full Auto - Contoured- USED

    H&K Heckler & Koch

    Now: $684.95
    Was: $999.95
    HK Heckler and Koch German SEF Full Auto Trigger Group in USED condition for HK MP5 Used MP5 contoured SEF trigger group that is 100% functional and entirely authentic German HK. This German MP5, 94, or Clone SEF contoured F/A trigger group is complete...
    HKP-13932
    Now: $684.95
    Was: $999.95
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    Was: $999.95
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  • On Sale
    HK MP5, AP5 Cocking Handle HK MP5, AP5 Cocking Handle
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    HK MP5, AP5 Cocking Handle

    MKE

    Now: $15.95
    Was: $17.95
    HK MP5 and AP5 Cocking Handle Factory OEM Replacement Factory OEM replacement AP5 cocking handle as found on MKE/Century AP5 models.Compatible With: HK MP5, MP5K, SP89, MP5SD HK SP5, SP5K, SP5-PDW, SP5L Century AP5, AP5-P, AP5-M In-spec clones...
    HKP-22475
    Now: $15.95
    Was: $17.95
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  • On Sale
    HK417, MR762 Upper Receiver Rod Tool HK417, MR762 Upper Receiver Rod Tool
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    HK417, MR762 Upper Receiver Rod Tool

    MI Midwest Industries

    Now: $135.95
    Was: $159.95
    Midwest Industries Upper Receiver Rod Tool for HK417, MR762 Receiver support rod for HK417 and MR762 upper receivers. Designed to prevent receiver and index-pin damage during barrel nut removal, muzzle device installation, and other high-torque...
    HKP-22353
    Now: $135.95
    Was: $159.95
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    Was: $159.95
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  • On Sale
    New - HKP HK VP9 EDC Magwell - Ultra Low Profile - HKP-22190-M HK VP9 EDC Magwell - Ultra Low Profile
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    HK VP9 EDC Magwell - Ultra Low Profile

    HKP HK Parts

    Now: $47.95
    Was: $59.95
    HKP HK VP9 EDC Magwell - Ultra Low Profile The smallest and most streamlined EDC magwell for the HK VP9, now featuring a fully functional funnel designed for rapid, seamless reloads. Crafted from durable aluminum and treated with type 3 hard coat...
    HKP-22190-M
    Now: $47.95
    Was: $59.95
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  • On Sale
    New - HKP HK P30 EDC Magwell - Ultra Low Profile - HKP-22189-M HK P30 EDC Magwell - Ultra Low Profile
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    HK P30 EDC Magwell - Ultra Low Profile

    HKP HK Parts

    Now: $47.95
    Was: $59.95
    HKP HK P30 EDC Magwell - Ultra Low Profile The smallest and most streamlined EDC magwell for the HK P30, now featuring a fully functional funnel designed for rapid, seamless reloads. Crafted from durable aluminum and treated with type 3 hard coat...
    HKP-22189-M
    Now: $47.95
    Was: $59.95
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  • New - H&K VP9/P30 A1 17 Round Magazine Floorplate - HKP-21979 HK VP9 A1, P30 A1 Magazine Floorplate - 9mm - 17 Round
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    HK VP9 A1, P30 A1 Magazine Floorplate - 9mm - 17 Round

    H&K Heckler & Koch

    $21.95
    H&K VP9/P30 A1 17 Round Magazine Floorplate Factory replacement floorplate for VP9 and P30 17-round magazines. Compatible with HK VP9/P30 A1 17 round magazines HK VP9/P30 17 round magazines HK VP9/P30 15 when used with a 17-round magazine locking...
    HKP-21979
    $21.95
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  • Out Of Stock
    New - RCM HK VP40 to 9mm Conversion Barrel - Threaded - 1/2x28 - HKP-21676 HK VP40 Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28

    HK VP40 Conversion Barrel - .40 S&W to 9mm - Threaded - 1/2x28

    RCM

    $214.95
    RCM HK VP40 to 9mm Conversion Barrel - Threaded - 1/2x28 This 9mm conversion barrel is a drop-in replacement that allows your VP40 to shoot the popular 9mm cartridge. It has the standard 1/2x28 thread and comes with a thread protector. Each...
    HKP-21676
    $214.95
    Out Of Stock
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    $214.95
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  • On Sale
    New - HKP HK MP5 40/10 Dual Magazine Clamp - HKP-21614-M HK MP5 Dual Magazine Clamp - 10mm, .40 S&W
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    HK MP5 Dual Magazine Clamp - 10mm, .40 S&W

    HKP HK Parts

    Now: $39.96
    Was: $49.95
    HKP HK MP5 40/10 Dual Magazine Clamp The HK Parts MP5 40/10 dual magazine clamp is expertly crafted to fit all 40/10 MP5 polymer magazines. Constructed from durable aluminum and finished with a type 3 hard anodize for enhanced protection and a premium...
    HKP-21614-M
    Now: $39.96
    Was: $49.95
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