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 Slide Release Spring - HKP-01788
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    HK Mark 23 Slide Release Spring

    H&K Heckler & Koch

    $15.99
    HK Mark 23 Slide Release Spring
    HKP-01788
    $15.99
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  • New - H&K HK Mark 23 Decocker C-Clip - HKP-01629
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    HK Mark 23 Decocker C-Clip

    H&K Heckler & Koch

    $19.95
    HK Mark 23 Decocking C-Clip (Lock Washer)
    HKP-01629
    $19.95
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  • New - H&K HK P30 V3 Series Hammer - HKP-02503 HK P30 V3 Series Hammer
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    HK P30 V3 Series Hammer

    H&K Heckler & Koch

    $55.95
    HK P30 V3 Series Hammer New German HK production. Compatible With: HK P30 V3 HK P30L V3 HK P30LS V3 HK P30SK V3
    HKP-02503
    $55.95
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  • New - H&K HK USP Old Style Catch - HKP-01932 HK USP Old Style Catch
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    HK USP Old Style Catch

    H&K Heckler & Koch

    $39.95
    HK USP Old Style Catch   Compatible With: HK USP 9mm HK USP 40
    HKP-01932
    $39.95
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  • New - H&K HK USPC V3 Control Lever - HKP-01436 HK USP Compact V3 Control Lever
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    HK USP Compact V3 Control Lever

    H&K Heckler & Koch

    $32.95
    HK USPC V3 Control Lever Compatible With: HK USP Compact 9mm HK USP Compact 357 SIG HK USP Compact 40 S&W HK USP Compact 45 ACP
    HKP-01436
    $32.95
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  • New - HKP HK MR556/416 Titanium Firing Pin Catch - HKP-17767
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    HK416, MR556 Firing Pin Catch - Titanium

    HKP HK Parts

    $49.95
    HKP HK Parts HK416 and HK MR556 Firing Pin - Titanium Made in the US from grade 6 Titanium. Get the lightest, strongest firing pin available for your HK firearm. Compatible With: HK416, MR556 HK M27
    HKP-17767
    $49.95
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  • Out Of Stock
    New - H&K HK G36/SL8 Piston Rod Spring - HKP-01863

    HK G36, SL8 Piston Rod Spring

    H&K Heckler & Koch

    $9.99
    HK G36 & SL8 Piston Rod Spring A must-have spare repair and replacement part. New HK German factory part. Compatible With: HK G36 HK SL8
    HKP-01863
    $9.99
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    $9.99
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  • HK91, G3 Firing Pin - Titanium HK91, G3 Firing Pin - Titanium
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    HK91, G3 Firing Pin - Titanium

    HKP HK Parts

    $34.95
    HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...
    HKP-17937
    $34.95
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  • New - H&K CC9 Firing Pin Safety - HKP-22133
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    HK CC9 Firing Pin Safety

    H&K Heckler & Koch

    $18.95
    H&K CC9 Firing Pin Safety Made by H&K, the firing pin safety for the CC9 blocks firing pin movement until the trigger is pulled. Compatible With: HK CC9  
    HKP-22133
    $18.95
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  • New - H&K CC9 Extractor Buffer - HKP-22131
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    HK CC9 Extractor Buffer

    H&K Heckler & Koch

    $5.95
    H&K CC9 Extractor Buffer Made in Germany by H&K, the extractor buffer for the CC9 cushions extractor movement and reduces wear during cycling. Compatible With: HK CC9  
    HKP-22131
    $5.95
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  • Out Of Stock
    New - H&K CC9 Sear Spring - HKP-22115

    HK CC9 Sear Spring

    H&K Heckler & Koch

    $6.95
    H&K CC9 Sear Spring Made in Germany, the CC9 sear spring applies tension to the sear for proper engagement and release during firing cycle. Compatible With: HK CC9  
    HKP-22115
    $6.95
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    $6.95
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  • New - H&K MR556 A4/416 A5 Gas Block Spring - HKP-22060 HK416 A5, MR556 A4 Gas Block Spring
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    HK416 A5, MR556 A4 Gas Block Spring

    H&K Heckler & Koch

    $19.95
    HK Heckler and Koch HK416 A5, MR556 A4 Gas Block Spring German-made gas block spring for the HK MR556 A4 and HK416 A5. Compatible With: MR556 A4 HK416 A5
    HKP-22060
    $19.95
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