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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  • On Sale
    New - HKP HK VP9/VP9SK, VP40 Enhanced Support Sleeve - Green - HKP-19631 HK VP9, VP9SK, VP40 Enhanced Support Sleeve - Green
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    HK VP9, VP9SK, VP40 Enhanced Support Sleeve - Green

    HKP HK Parts

    Now: $7.75
    Was: $14.96
    Enhanced Support Sleeve VP9, VP9SK & VP40 - Aluminum Alloy - Green A must-have upgrade part for the VP series of pistols! The support sleeve is found in the VP slide and is the part that depresses to allow you to remove the slide plate, firing pin...
    HKP-19631
    Now: $7.75
    Was: $14.96
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    Now: $7.75
    Was: $14.96
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  • New - HKP HK VP9/VP9SK/VP40 Hex Button Quick Detach Slide Plate - HKP-18111-M HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate
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    HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate

    HKP HK Parts

    $34.95
    HKP HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate   The HK Parts Quick Detach Slide Plate for the HK VP series of pistols is ideal for those that want the ability of quickly and efficiently access the firing pin, sleeve assembly. The quick...
    HKP-18111-M
    $34.95
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    $34.95
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  • New - H&K VP9, VP40 Grip Panel Left Side - Large - Black - HKP-16808 HK VP9, VP40 Grip Panel Left Side - Large
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    HK VP9, VP40 Grip Panel Left Side - Large

    H&K Heckler & Koch

    $24.95
    Heckler and Koch Grip Panel in multiple colors and sizes for the left side of the HK VP9 and HK VP40 grips. Large left grip shell for HK VP9 and HK VP40 pistols. New HK German manufactured. Heckler and Koch's interchangeable panels are the...
    HKP-16808
    $24.95
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    $24.95
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  • Out Of Stock
    New - RCM HK USP .40 S&W To .357 SIG Conversion Barrel - Non-Threaded - HKP-17746 HK USP Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded

    HK USP Conversion Barrel - .40 S&W to .357 SIG - Non-Threaded

    RCM

    $237.50
    RCM HK USP .40 S&W To .357 SIG Conversion Barrel - Non-Threaded Each barrel is finely and painstakingly made from ordnance grade steel, heat treated, with a nitrided finish inside and out. This is the finest replacement barrel available for the HK...
    HKP-17746
    $237.50
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    $237.50
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  • Out Of Stock
    New - H&K HK USP .45 ACP Complete Slide - HKP-16723 HK USP .45 ACP Complete Slide

    HK USP .45 ACP Complete Slide

    H&K Heckler & Koch

    $499.95
    H&K HK USP .45 ACP Complete Slide HK factory date coded, un-serialized & German manufactured. These slides are and hard to find. Includes: Complete Slide Front & rear sights Firing pin Firing pin block Firing pin block spring 2 X 3 X 14mm...
    HKP-16723
    $499.95
    Out Of Stock
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    $499.95
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  • New - Streamlight HK USP TLR-4 Light & Laser - Red - HKP-16916 Streamlight HK USP TLR-4 Light & Laser - Red
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    Streamlight HK USP TLR-4 Light & Laser - Red

    Streamlight

    $229.95
    Streamlight HK USP TLR-4 Light & Laser - Red Features: White LED with Red Laser Ambidextrous momentary/steady On-Off switch One-handed snap-on and tighten interface keeps hands away from the muzzle when attaching/detaching Securely fits a broad...
    HKP-16916
    $229.95
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  • New - H&K HK MR556/416 Operators Manual - HKP-00054 HK416, MR556 Operators Manual
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    HK416, MR556 Operators Manual

    H&K Heckler & Koch

    $39.95
    New Latest Print Production HK German 416 & MR556 Operators Manual Each manual is 62 pages and is the go to resource to maintain, clean, and become well versed with the HK 416 and MR556 series of weapon systems.  
    HKP-00054
    $39.95
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  • HK93, HK33 Handguard - M-LOK HK93, HK33 Handguard - M-LOK
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    HK93, HK33 Handguard - M-LOK

    HKP HK Parts

    $119.95 - $139.95
    HK93, HK33 & PTR Low Profile Forearm M-LOK The M-LOK tactical handguard delivers modern M-LOK functionality to classic HK platforms.   Features: Made in USA (922r compliant) M-LOK compatible Machined from billet aircraft grade aluminum Type...
    HKP-17263-M
    $119.95 - $139.95
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  • New - H&K 93/53/33 (5.56/.223) Backplate - Parkerized - HKP-16252 HK33, HK53, HK93 Backplate - Parkerized
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    HK33, HK53, HK93 Backplate - Parkerized

    H&K Heckler & Koch

    $64.95
    Steel Back Plate For HK93, 33, 53 & MP5, 94- Parkerized Finish HK German backplate with the recoil assembly cup guide installed. Each unit comes complete & freshly parkerized.  Derived from a German HK91 backplate and using factory tooling,...
    HKP-16252
    $64.95
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    $64.95
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  • New - HKP MP5 10mm Pistol Build Kit - HKP-18409 HK MP5 Parts Kit - 10mm - Pistol
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    HK MP5 Parts Kit - 10mm - Pistol

    HKP HK Parts

    $1,879.95
    HKP HK Parts HK MP5 Parts Kit - 10mm - Pistol With Flat, Top Rail, and Weldment Set - 10mm HK Parts MP5 Build Kit is the best priced value available anywhere. There is a limited supply and they will be gone before you know it. The MP5 10mm parts kit...
    HKP-18409
    $1,879.95
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    $1,879.95
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  • New - HKP HK34 Cocking Tube - HKP-16444 HK34 Cocking Tube
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    HK34 Cocking Tube

    HKP HK Parts

    $159.95
    HKP HK34 Cocking Tube HK34 Length Cocking Tube.  Made in the USA from German & US made components.  Each unit comes as pictured with the MP5/94 style locking location and hanger installed. The HK34 cocking tube will use standard MP5/94...
    HKP-16444
    $159.95
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    $159.95
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  • HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1 HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1
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    HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1

    FMP HK CONTRACT

    $89.95
    HK G3, 91 Barrel - 7.62/.308 - 17.7" - Threaded 15x1 Original 17.7" FMP G3 barrel threaded 15x1 RH. Portuguese manufactured to HK's military specifications. These surplus barrels are perfect for building a FMP G3 parts kit or as a replacement. Barrels...
    HKP-22532
    $89.95
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    $89.95
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