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 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

    $4.95
    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
    $4.95
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    $4.95
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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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    $9.95
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  • HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm
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    HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm

    H&K Heckler & Koch

    $31.99
    H&K MR556 A4 and HK416 A5 Gas Vent Screws German gas vent screw for MR556 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm equals...
    HKP-22470-M
    $31.99
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    $31.99
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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 P7M8/P7M13 Detent, Piston - HKP-16327
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    HK P7M8, P7M13 Detent - Gas Piston

    H&K Heckler & Koch

    $9.95
    H&K HK P7M8/P7M13 Detent, Piston Compatible With: P7M8 P7M13
    HKP-16327
    $9.95
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    $9.95
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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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  • On Sale
    New - HKP HK VP9/VP40 Enhanced Support Sleeve - Black - BLEMISHED - HKP-18677-BL-B HK VP9, VP40 Enhanced Support Sleeve - Black - BLEMISHED
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    HK VP9, VP40 Enhanced Support Sleeve - Black - BLEMISHED

    HKP HK Parts

    Now: $9.95
    Was: $19.95
    HKP HK VP9/VP40 Enhanced Support Sleeve COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The support sleeve in the VP series pistols is a crucial component that...
    HKP-18677-BL-B
    Now: $9.95
    Was: $19.95
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    Now: $9.95
    Was: $19.95
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  • New - H&K HK VP9/VP9SK, VP40 Main Spring For Firing Pin - HKP-16829
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    HK VP9, VP9SK, VP40 Firing Pin Spring

    H&K Heckler & Koch

    $9.95
    H&K HK VP9/VP9SK, VP40 Main Spring For Firing Pin German HK. Compatible With: VP9 VP9 Tactical VP9SK VP40 VP40 Tactical
    HKP-16829
    $9.95
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    $9.95
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  • New - H&K HK MR556/762/416/417 Bolt Catch Spring - HKP-16661
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    HK416, HK417, MR556, MR762 Bolt Catch Spring

    H&K Heckler & Koch

    $6.95
    H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417
    HKP-16661
    $6.95
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    $6.95
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  • New - H&K HK MR556/MR762/416 Forward Assist Assembly - HKP-16528 HK416, MR556, MR762 Forward Assist Assembly
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    HK416, MR556, MR762 Forward Assist Assembly

    H&K Heckler & Koch

    $74.95
    H&K HK MR556/MR762/416 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK MR556 HK 416 HK MR762
    HKP-16528
    $74.95
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    $74.95
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  • New - H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring - HKP-01866
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    HK G36, UMP Sear Spring

    H&K Heckler & Koch

    $8.95
    HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.  
    HKP-01866
    $8.95
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    $8.95
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