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 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 HK USP/USPC/45/45C New Style Hammer - HKP-01256
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    HK45, HK45 Compact, USP, USP Compact New Style Hammer

    H&K Heckler & Koch

    $62.95
    H&K HK USP/USPC/45/45C New Style Hammer Will work for USP/USPC variants 1-4, 9 & 10. This part replaces the older HK hammer without the sear cutout (part #214825). Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact...
    HKP-01256
    $62.95
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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 - H&K HK VP9/VP9SK, HK VP40 Complete Trigger Bar Form Spring - HKP-16781 HK VP9, VP9SK, VP40 Trigger Bar Spring - Complete
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    HK VP9, VP9SK, VP40 Trigger Bar Spring - Complete

    H&K Heckler & Koch

    $51.95
    H&K HK VP9/VP9SK, HK VP40 Complete Trigger Bar Form Spring Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16781
    $51.95
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    $51.95
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  • New - H&K HK Mark 23 Ejector Roll Pin - HKP-01816
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    HK Mark 23 Ejector Roll Pin

    H&K Heckler & Koch

    $6.95
    HK Mark 23 Ejector Roll Pin The Mark 23 has been discontinued, and spare parts will become limited in time, so stock up now while we have these hard-to-find parts available.
    HKP-01816
    $6.95
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    $6.95
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  • New - H&K HK416/417/MR556/MR762 Catch Spring - Magazine - HKP-02620
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    HK416, MR556, HK417, MR762 Magazine Catch Spring

    H&K Heckler & Koch

    $9.95
    HK MR556, HK 416 & MR762 & 417 Magazine Catch Spring HK German manufacture. Compatible With: HK MR556 HK 416, M27 HK MR762 HK 417, G28 AR15, M4 & M16 firearms
    HKP-02620
    $9.95
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  • New - H&K HK P30SK/P2000SK Hammer Spring - HKP-02598
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    HK P30SK, P2000SK Hammer Spring

    H&K Heckler & Koch

    $9.95
    HK German Hammer Spring  This spring is used with LEM and all standard models. Compatible With: P2000SK P30SK   
    HKP-02598
    $9.95
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    $9.95
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  • MKE HK MP5/MP5K Magazine Release Bushing MKE HKP-22283 MKE HK MP5/MP5K Magazine Release Bushing MKE HKP-22283
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    HK MP5, MP5K, G36, HK33, HKK53, HK93, HK417 Magazine Release Bushing - Full Auto

    MKE

    $2.59
    MKE HK MP5/MP5K Magazine Release Bushing This part is for use in all 90-series H&K weapon systems and is used for installing a paddle mag release. This is not for use on semi-auto HK builds. This part is intended for full-auto conversions only...
    HKP-22283
    $2.59
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    $2.59
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  • New - H&K HK USP 9mm/.40 S&W Recoil Rod Assembly - HKP-01458
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    HK USP 9mm, .40 S&W Recoil Rod Assembly

    H&K Heckler & Koch

    $64.95
    H&K HK USP 9mm/.40 S&W Recoil Rod Assembly New HK German USP full size USP 9/40 recoil assembly complete. A great spare part to have on hand as the recoil spring is a high-wear item. Compatible With: HK USP 9mm HK USP .40
    HKP-01458
    $64.95
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  • New - H&K HK USP/45/45C Trigger Bar Detent - HKP-01922
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    HK45, HK45 Compact, USP Trigger Bar Detent

    H&K Heckler & Koch

    $5.95
    Trigger Bar Detent Compatible With: HK45, HK45 Tactical HK45C, HK45C Tactical HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .357 SIG HK USP Compact .45 ACP All USP Tactical, Elite & Expert...
    HKP-01922
    $5.95
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    $5.95
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  • New - H&K HK 45/P30/P2000/USPC Recoil Spring Washer Retainer - HKP-02428
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    HK45, P30, P2000, USP Stop Disc - Recoil Spring

    H&K Heckler & Koch

    $12.95
    HK 45, P30, P2000, & USPC Recoil Spring Washer Retainer This disk supports and keeps the recoil spring centered and captive on the recoil rod itself.  Compatible With: HK45, HK45 Tactical HK45 Compact, HK45 Compact Tactical USP Compact, USP...
    HKP-02428
    $12.95
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    $12.95
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  • New - H&K HK USP/USPC Lanyard Loop Insert - HKP-01935 HK USP, USP Compact Lanyard Loop Insert
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    HK USP, USP Compact Lanyard Loop Insert

    H&K Heckler & Koch

    $13.95
    HK USP/USPC Lanyard Loop Insert Compatible With: HK USP 9mm HK USP .40 HK USP Compact 9mm HK USP Compact .40 / .357 HK USP Compact .45
    HKP-01935
    $13.95
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    $13.95
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