Small Parts

Small Parts

Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.

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  • New - H&K HK Mark 23 Decocking Spring - HKP-02322
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    HK Mark 23 Decocking Spring

    H&K Heckler & Koch

    $6.95
    HK Mark 23 Decocking Spring  
    HKP-02322
    $6.95
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    $6.95
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  • New - H&K HK P30/P2000 Trigger Bar Detent - HKP-01798
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    HK P30, P2000 Trigger Bar Detent

    H&K Heckler & Koch

    $16.95
    HK P30 & P2000 Trigger Bar Detent Compatible With These Models In 9mm, .40 S&W, & .357 SIG: HK P2000 HK P2000SK HK P30 HK P30L HK P30SK
    HKP-01798
    $16.95
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    $16.95
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  • New - H&K HK MR556/MR762/416/417 Sear Release Rocker Latch - HKP-12705
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    HK416, HK417, MR556, MR762 Sear Release Rocker Latch

    H&K Heckler & Koch

    $99.95
    H&K HK MR556/MR762/416/417 Sear Release Rocker Latch Compatible With: HK MR556 HK 416 HK MR762 HK 417
    HKP-12705
    $99.95
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    $99.95
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  • Out Of Stock
    New - HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B - Push Pin - HKP-16339 HK UMP, USC Stock Block B Sling Pin - Push Pin Style

    HK UMP, USC Stock Block B Sling Pin - Push Pin Style

    HDPS

    $39.95
    HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B - Push Pin This sling pin will replace the current production stock Block B hardware and upgrade to the Sling Pin Pull Style version.
    HKP-16339
    $39.95
    Out Of Stock
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    $39.95
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  • HK UMP Paddle Magazine Release - Extended HK UMP Paddle Magazine Release - Extended
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    HK UMP Paddle Magazine Release - Extended

    HKP HK Parts

    $34.95
    UMP Paddle Magazine Release - Extended Billeted alloy UMP magazine release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release you get more surface area as well as a much...
    HKP-17919
    $34.95
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    $34.95
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  • New - RCM MP5 40/10 Extractor - HKP-01969 HK MP5 Extractor - .40 S&W / 10mm
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    HK MP5 Extractor - .40 S&W / 10mm

    RCM

    $34.95
    MP5 40 & 10mm Extractor - US Made This part is made to the exact same specs as the HK German extractor final polish included. It is also a great upgrade for the clone CA and Vector builds.
    HKP-01969
    $34.95
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  • On Sale
    HK AP5P/MP5K Recoil Rod Assembly MKE HKP-22389 HK AP5P/MP5K Recoil Rod Assembly MKE HKP-22389
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    HK MP5K, AP5-P Recoil Rod Assembly

    MKE

    Now: $54.95
    Was: $64.95
    MKE HK AP5P/MP5K Recoil Rod Assembly The recoil spring assembly is a great item to have on hand for replacement and spares as this is a consumable wearable part.  Compatible With: HK SP5K/MP5K/SP89 Century Arms AP5-P/AP5-M Clones and other HK...
    HKP-22389
    Now: $54.95
    Was: $64.95
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    Now: $54.95
    Was: $64.95
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  • New - H&K CC9 Extractor Roll Pin - HKP-22132
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    HK CC9 Extractor Roll Pin

    H&K Heckler & Koch

    $5.95
    H&K CC9 Extractor Roll Pin Made in Germany, the extractor roll pin for the CC9 secures the extractor to the slide. Compatible With: HK CC9  
    HKP-22132
    $5.95
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    $5.95
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  • New - H&K CC9 Recoil Spring Assembly - HKP-22128
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    HK CC9 Recoil Spring Assembly

    H&K Heckler & Koch

    $48.95
    H&K CC9 Recoil Spring Assembly Made in Germany, the recoil spring assembly for CC9 pistol absorbs slide movement and returns the slide to battery during cycling. Compatible With: HK CC9  
    HKP-22128
    $48.95
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    $48.95
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  • Out Of Stock
    New - KCI HK MP5 Locking Plate - HKP-21377 HK MP5 Magazine Locking Plate - 30 Round

    HK MP5 Magazine Locking Plate - 30 Round

    KCI

    $3.49
    KCI HK MP5 Locking Plate Spare locking plate for KCI MP5 30 round magazines. Compatible With: HK MP5
    HKP-21377
    $3.49
    Out Of Stock
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    $3.49
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  • New - H&K HK MR762 Ejection Door Clamping Sleeve - HKP-16518
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    HK MR762 Ejection Door Clamping Sleeve

    H&K Heckler & Koch

    $4.95
    H&K HK MR762 Ejection Door Clamping Sleeve Compatible With: HK MR762
    HKP-16518
    $4.95
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    $4.95
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  • Out Of Stock
    New - H&K HK MR762/417 Cylindrical Pin For Stop Pin - HKP-16619

    HK417, MR762 Cylindrical Pin for Stop Pin

    H&K Heckler & Koch

    $9.95
    H&K HK MR762/417 Cylindrical Pin For Stop Pin HK 2x18 mm pin designed for use with the rear take down pin detent and spring. Compatible With: HK MR762 HK 417
    HKP-16619
    $9.95
    Out Of Stock
    Qty in Cart: 0
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    $9.95
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