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 - RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 - HKP-17744 HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded  9/16x24

    HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 9/16x24

    RCM

    $225.00
    RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the best replacement barrel for the HK USP full-size .40 S&W...
    HKP-17744
    $225.00
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  • New - H&K HK MR556/416/G36 Cleaning Kit - HKP-00035 HK416, MR556, G36 Cleaning Kit, Complete - Carrying Case
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    HK416, MR556, G36 Cleaning Kit, Complete - Carrying Case

    H&K Heckler & Koch

    $79.95
    HK Factory German G36, HK416, & MR556 Complete Cleaning Kit Each kit includes the following parts: Saf-T-Clad cleaning rod Accessory adapter section #8-32 Patch holder Chamber cleaning brush Bore cleaning brush Double-ended utility brush Formula 3...
    HKP-00035
    $79.95
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  • New - MM HK 21E (7.62x51/.308) Belt Box - HKP-17752
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    HK21E Ammunition Belt Box - 7.62x51 / .308

    Michaels Machines

    $674.95
    HK21E & MM21E Belt Box Brand new HK21E, MM21E US made feed box. The German units have long since been out of production. These are exact replicas of the German units. Made in the USA. Compatible With: HK21E  MM21E
    HKP-17752
    $674.95
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  • Out Of Stock
    New - H&K HK53/HK51 Handguard - Full Length - HKP-00468 HK53, HK51 Handguard - Full Length

    HK53, HK51 Handguard - Full Length

    H&K Heckler & Koch

    $59.95
    H&K HK53/HK51 Handguard - Full Length H&K German manufactured HK51 and HK53 polymer handguard. This handguard is the proper length to cover the extended portion of the trunnion found on the HK53 and HK51 style of firearms. Compatible...
    HKP-00468
    $59.95
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  • New - H&K MP5 40/10 30 Round Magazine Spring - HKP-01056
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    HK MP5 Magazine Spring - .40 S&W / 10mm - 30 Round

    H&K Heckler & Koch

    $9.95
    H&K MP5 40/10 30 Round Magazine Spring New HK German MP5 40/10 magazine spring for the 30 round magazine. Hard to find and a must have repair and replacement item.
    HKP-01056
    $9.95
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  • Used - H&K MP5 40/10 SEF F/A Trigger Pack Complete - HKP-00151 HK MP5 SEF Trigger Pack, Complete - Full Auto - .40 S&W / 10 mm
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    HK MP5 SEF Trigger Pack, Complete - Full Auto - .40 S&W / 10 mm

    H&K Heckler & Koch

    $239.95
    HK German SEF Full Auto Trigger Pack Complete Factory HK German MP5 40 caliber full auto trigger pack is unmodified as it comes from HK. Our F/A trigger pack comes with a used factory German HK 40/10 caliber ejector lever and heavy hammer spring. Each...
    HKP-00151
    $239.95
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  • New - Ergo M-LOK Hand Stop - HKP-17852
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    Ergo M-LOK Handstop

    Ergo

    $54.95
    M-LOK Hand Stop/Barricade Stop in Black Features: Aggressive textured front for enhanced traction on barricades and obstacles Low profile base also functions as a comfortable hand stop Black anodized 6061-T6 aluminum Fits all M-LOK style forearms or...
    HKP-17852
    $54.95
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  • New - H&K Ambidextrous Left Side Extended ESSL 4 Position Burst - HKP-00126
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    HK MP5 Selector Lever - Left Side - Extended 4 Position Ambi - ESSL

    H&K Heckler & Koch

    $299.95
    HK German Ambidextrous Left Side EXTENDED Safety Selector Lever 4 Position Burst (0,1,3, F) The ESSL will allow the user to have an easier time getting to the selector lever than a standard length lever. Great for those who...
    HKP-00126
    $299.95
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  • Out Of Stock
    New - B&T HK MP5/MP5K Telescopic Brace - Stock Conversion Kit - HKP-21384 HK MP5, MP5K Telescopic Buttpad

    HK MP5, MP5K Telescopic Buttpad

    B&T Brugger & Thomet

    $190.00
    B&T HK MP5, MP5K Telescopic Buttpad - Brace Conversion B&T replacement stock buttpad.  Also used to convert B&T's telescopic brace to a stock (BT-200601) Compatible With: HK MP5 HK MP5K MAC-5 clones may require custom fitment...
    HKP-21384
    $190.00
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    Used - Dual/Single Optic Front Sight Screw - G36 - Extended - HKP-20894 HK G36, SL8 Front Sight Screw - Extended - Dual and Single Optics

    HK G36, SL8 Front Sight Screw - Extended - Dual and Single Optics

    USA

    $5.95
    Single Optic Front Sight Screw - G36 - Extended This is a required part if you want to install either the dual or single optic.    Compatible With: HK G36 HK SL8
    HKP-20894
    $5.95
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  • New - HKP MP5K/SP5K/SP89 Side Folding Brace Adapter - HKP-20798-M HK MP5K, SP5K, SP89 Side Folding Brace Adapter
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    HK MP5K, SP5K, SP89 Side Folding Brace Adapter

    HKP HK Parts

    $119.95
    HKP MP5K/SP5K/SP89 Side Folding Brace  Adapter The HK Parts folding brace adapter is the best option to attach the SB tactical Folding brace or any brace that utilizes the same mounting system. Hardware included for a quick and easy installation. QD...
    HKP-20798-M
    $119.95
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  • New - Talon Grip HK VP9, VP40 Granulate - Medium - Black - HKP-20247 HK VP9, VP40 Grip Wrap for Medium Backstraps - Granulate
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    HK VP9, VP40 Grip Wrap for Medium Backstraps - Granulate

    Talon Grip

    $19.99
    TALON Grip - H&K VP9, VP40 - Granulate Black - Medium Backstrap TALON grips are textured, stick-on gun grips that help you get a secure hold on your firearm improving performance, safety, and confidence so you maintain control. Installation is quick...
    HKP-20247
    $19.99
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