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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  • Used - H&K 91/G3 (7.62x51/.308) Slimline Forearm - Black - Used Good - HKP-18316 HK91, G3 Handguard - Slimline Style - Used Good
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    HK91, G3 Handguard - Slimline Style - Used Good

    H&K Heckler & Koch

    $17.45
    Used Authentic German Military Surplus Black Slim Line Forearm With Heat Shield Very good condition. For the money, these are a nice addition to the collection. Compatible With: all full forearm length HK 91, G3, PTR style firearms
    HKP-18316
    $17.45
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    $17.45
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  • New - B&T MP5, SP5, 94, K - Mid Range Scope Mount - HKP-16877 HK MP5, SP5K, HK94 Optic Mount - Mid Range
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    HK MP5, SP5K, HK94 Optic Mount - Mid Range

    B&T Brugger & Thomet

    $119.95
    B&T MP5, SP5, 94 - Mid Range Scope Mount Includes a witness hole so you can use iron sights with the mount installed. B&T Switzerland is a world leader in arms innovation. This same mount is in use by several militaries around the world. Buy with...
    HKP-16877
    $119.95
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    $119.95
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  • New - HKP HK MP5 Picatinny Rail Brace/Stock Adapter - HKP-21426 HK MP5 Stock or Brace Adapter - Picatinny Rail
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    HK MP5 Stock or Brace Adapter - Picatinny Rail

    HKP HK Parts

    $119.95
    HKP HK MP5 Picatinny Rail Brace/Stock Adapter Our rail stock adapter allows you to attach any 1913 Style Stock or brace to your MP5. The 1913 style stocks & braces lock in place and provide a better cheek weld hieght option than many traditional...
    HKP-21426
    $119.95
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    $119.95
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  • New - RCM HK MP5 Semi Auto Carrier - HKP-20981 HK MP5 Bolt Carrier - Semi Auto
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    HK MP5 Bolt Carrier - Semi Auto

    RCM

    $146.95
    RCM HK MP5 Semi Auto Carrier New RCM manufactured MP5, 94 F/A carrier with all current "F" style upgrades and tungsten filled for the best performance and the utmost reliability. Machined completely from billet ordnance grade steel to exact HK German...
    HKP-20981
    $146.95
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    $146.95
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  • New - H&K G36 FBI 0,1 Lower Complete - HKP-00628 HK G36 FBI 0,1 Lower Complete
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    HK G36 FBI 0,1 Lower Complete

    $499.95
    HK German G36, G36K, G36C - FBI (0,1) Lower This is a popular item for use on the SL8 to G36 conversions. The (0,1) G36 lowers are hard to obtain, and availability is limited.  
    HKP-00628
    $499.95
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    $499.95
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  • Out Of Stock
    Like New - H&K 30 Round HK MP5, MP5K LEO Marked 9mm Magazine - Like New- HKP-20517 HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - LEO Marked - Like New

    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - LEO Marked - Like New

    H&K Heckler & Koch

    $199.95
    HK German MP5 30 Round Magazine Laser Etched LEO Markings This is a Like New H&K German MP5 9mm 30-round magazine in excellent condition. All MP5 magazines are police department trade-in items featuring laser-etched LEO/Restricted markings. These...
    HKP-20517
    $199.95
    Out Of Stock
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  • New - H&K VP9/VP9SK, VP40 Catch Pressure Spring - HKP-16800
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    HK VP9, VP9SK, VP40 Sear Spring

    H&K Heckler & Koch

    $9.95
    H&K VP9/VP9SK, VP40 Catch Pressure Spring Compatible With: HK VP9 HK VP9SK HK VP9A1 F, VP9A1 K HK VP40
    HKP-16800
    $9.95
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    $9.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Handle Pin - HKP-01885
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    HK UMP, USC Cocking Handle Pin

    H&K Heckler & Koch

    $7.95
    HK UMP & USC Cocking Handle Pin Compatible With: HK UMP HK USC
    HKP-01885
    $7.95
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    $7.95
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  • New - Magpul MS3 Sling - Gen 2 - Black - HKP-13727
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    Magpul MS3 Sling - Gen 2

    Magpul

    $49.95
    Magpul MS3 Sling - Gen 2 Magpul Industries MS3- Multi Mission Sling System Sling Black AR Rifles 1 or 2 Point Sling.
    HKP-13727
    $49.95
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    $49.95
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  • On Sale
    New - HKP Single Point Sling - Dark Earth - HKP-09051 HK Single Point Sling - Dark Earth
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    HK Single Point Sling - Dark Earth

    HKP HK Parts

    Now: $15.95
    Was: $29.95
    HKP Single Point Sling - Dark Earth This sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point HK sling. Features: Super thick all Dark Earth heavy-duty corduroy nylon to withstand years of heavy...
    HKP-09051
    Now: $15.95
    Was: $29.95
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    Now: $15.95
    Was: $29.95
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  • Used - H&K 91/G3 (7.62x51/.308) Slimline Forearm - OD Green - LIKE NEW - HKP-21477 HK 91, G3 Handguard - Slimline Style - OD Green - LIKE NEW
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    HK 91, G3 Handguard - Slimline Style - OD Green - LIKE NEW

    H&K Heckler & Koch

    $24.95
    H&K 91/G3 (7.62x51/.308) Slimline Forearm - OD Green - LIKE NEW Like new German military surplus O.D. green slimline forearm with heat shield. For use on standard contour barrels not the thicker barrel profiles. Compatible With: HK G3 HK 91 HK PTR...
    HKP-21477
    $24.95
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    $24.95
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  • New - H&K / HKP 14 Round HK VP9SK Magazine – Black - HKP-20888 HK VP9SK, P30SK Magazine - 9mm - 14 Round - Floorplate with Pinky Rest
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    HK VP9SK, P30SK Magazine - 9mm - 14 Round - Floorplate with Pinky Rest

    HKP HK Parts / Heckler & Koch

    $69.95
    HK VP9SK & P30SK 9mm – 14 Round Magazine New German VP9SK/P30SK HK manufacture 10 round magazine body, follower, spring, locking plate combined with the HK Parts +2 magazine extension installed & ready to use. This magazine has the same...
    HKP-20888
    $69.95
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    $69.95
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