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 Roll Pin Right Safety Lever - HKP-01813
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    HK Mark 23 Roll Pin Right Safety Lever

    H&K Heckler & Koch

    $7.95
    HK Mark 23 Roll Pin Right Safety Lever New HK German nickel plated 1.5 X 9mm roll pin to hold the right side of the selector lever to the axle of the left side control lever. Compatible With: HK Mark 23 HK SOCOM .45
    HKP-01813
    $7.95
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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 USP Series Old Style Firing Pin Block - HKP-01926 HK USP Firing Pin Block - Old Style
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    HK USP Firing Pin Block - Old Style

    H&K Heckler & Koch

    $29.95
    HK USP Series Old Style Firing Pin Block Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Compact 9mm HK USP Compact 357 HK USP Compact 40 HK USP Compact 45
    HKP-01926
    $29.95
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  • New - H&K HK G36 Right Side Lower Hammer Spring - HKP-01857
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    HK G36 Hammer Spring - Right Side

    H&K Heckler & Koch

    $8.95
    HK G36 Right Side Lower Hammer Spring  
    HKP-01857
    $8.95
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  • New - HKP HK G36/SL8 (5.56/.223) Cocking Handle - HKP-18251 HK G36, SL8 Cocking Handle
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    HK G36, SL8 Cocking Handle

    HKP HK Parts

    $49.95
    Cocking Handle For G36 & SL8 Bolt Carriers - USA New USA made charging handle ideal for a 922 replacement part. Made in the USA.
    HKP-18251
    $49.95
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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
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    $39.95
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  • Out Of Stock
    RCM HK MP5 Recoil Rod Assembly HK MP5 Recoil Rod Assembly

    HK MP5 Recoil Rod Assembly

    RCM

    $54.95
    RCM HK MP5 Recoil Rod Assembly The recoil rod and spring assembly is a great item to have on hand for replacement and spares as this is a consumable part. Compatible With: HK MP5 NOT compatible with SP5 with the F-style recoil rod MP5 clones and custom...
    HKP-22202
    $54.95
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  • New - H&K CC9 Firing Pin Spring Retainer - HKP-22139
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    HK CC9 Firing Pin Spring Retainer

    H&K Heckler & Koch

    $5.95
    H&K CC9 Firing Pin Spring Retainer Manufactured in Germany by H&K, this part secures the firing pin spring to the firing pin assembly, ensuring proper striker function during cycling. Compatible With: HK CC9    
    HKP-22139
    $5.95
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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
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    $3.49
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  • New - H&K VP9, VP40 Backstrap - Small - FDE - HKP-18118 HK VP9, VP40 Backstrap - Small - FDE
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    HK VP9, VP40 Backstrap - Small - FDE

    H&K Heckler & Koch

    $29.95
    H&K VP9, VP40 Backstrap - Small - FDE New HK German manufacture Compatible With: HK VP9 HK VP40 HK VP9A1 F HK VP9A1 K
    HKP-18118
    $29.95
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  • New - H&K HK 45C LEM Hammer Spring - HKP-15789
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    HK45 Compact LEM Hammer Spring

    H&K Heckler & Koch

    $9.95
    Hammer Spring For HK 45C LEM Models This hammer spring is the factory correct LEM hammer spring for the HK45C and HK45CT. This is the spring needed to use any other variant of LEM kit to be complete to be used on the HK45C pistol. This is also a great...
    HKP-15789
    $9.95
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  • New - H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch - HKP-15432 HK P7M10, P7M13 Slide Removal Button, Retaining Catch
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    HK P7M10, P7M13 Slide Removal Button, Retaining Catch

    H&K Heckler & Koch

    $29.95
    H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch Brand new HK German manufacture. No longer in production. These are the last units that HK made. Last call!
    HKP-15432
    $29.95
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