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 German Ambidextrous Sling Pin Replacement O-Ring - HKP-19985
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    HK German Ambidextrous Sling Pin Replacement O-Ring

    H&K Heckler & Koch

    $5.95
    H&K German Ambidextrous Sling Pin Replacement O-Ring HK ambidextrous sling pin replacement O-ring for all ambidextrous sling pins. Brand new factory German manufacture. This item is a common wear/breakage part that does need to be replaced from time...
    HKP-19985
    $5.95
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    New - HKP HK UMP, USC Lower Bolt Catch - HKP-19565 HK UMP, USC Lower Bolt Catch

    HK UMP, USC Lower Bolt Catch

    HKP HK Parts

    $22.95
    HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USC
    HKP-19565
    $22.95
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  • New - H&K HK MR762/417/G28 Firing Pin - HKP-16613
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    HK417, MR762, G28 Firing Pin

    H&K Heckler & Koch

    $64.95
    H&K HK MR762/417/G28 Firing Pin This firing pin is a must have wear and tear replacement item for your MR762 or HK 417 Firearm. Compatible With: MR762 HK 417 G28
    HKP-16613
    $64.95
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    New - H&K HK Mark 23/SOCOM Firing Pin - HKP-01670

    HK Mark 23, SOCOM Firing Pin

    H&K Heckler & Koch

    $47.95
    New HK German Mark 23 Firing Pin A great item to have on hand as these are a common wear item.  Compatbile With: Mark 23
    HKP-01670
    $47.95
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  • New - H&K HK Mark 23 Magazine Release - HKP-01772 HK Mark 23 Magazine Release
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    HK Mark 23 Magazine Release

    H&K Heckler & Koch

    $24.99
    HK Mark 23 Magazine Release  
    HKP-01772
    $24.99
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  • New - HKP HK 23E/13E (7.62x51/.308) & (5.56/.223) Firing Pin - Titanium - HKP-17770
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    HK23E, HK13E Firing Pin - Titanium - US

    HKP HK Parts

    $49.95
    HK23E, MM23E, 13E Firing Pin - Titanium Grade 6 weapons grade titanium manufacture. Made 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 weapon system. Get the lightest, strongest firing...
    HKP-17770
    $49.95
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  • New - HKP HK 21E/11E (7.62x51/.308) Firing Pin - Titanium - HKP-17771
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    HK21E, HK11E Firing Pin - Titanium

    HKP HK Parts

    $49.95
    HK21E, MM21E, 11E Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made  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 weapon system. Get the lightest,...
    HKP-17771
    $49.95
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  • New - H&K HK SEF & Navy 3 Position Trigger Spring - HKP-22178
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    HK90 Trigger Spring- 3 Position - SEF and Navy

    H&K Heckler & Koch

    $9.95
    H&K HK SEF & Navy 3 Position Trigger Spring Elevate your HK 90 series performance with a factory-fresh trigger spring, designed for both semi and full-auto models. These are an essential upgrade for any 90 series owner, ensuring optimal...
    HKP-22178
    $9.95
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  • New - H&K HK P7M8/P7M10/P7M13 Piston Roll Pin - HKP-01399
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    HK P7M8, P7M10, P7M13 Roll Pin - Gas Piston

    H&K Heckler & Koch

    $5.95
    Piston Roll Pin   Compatible With: P7M8 P7M10 P7M13
    HKP-01399
    $5.95
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  • New - H&K HK P2000/P2000SK/45/45C Right Slide Release Lever - HKP-01619
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    HK45, HK45 Compact, P2000, P2000SK Right Slide Release Lever

    H&K Heckler & Koch

    $49.95
    Right Slide Release Lever Compatible With: HK P2000 HK P2000SK HK45 HK45 Compact
    HKP-01619
    $49.95
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  • New - H&K HK USP Roll Pin for Hammer - HKP-17541
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    HK USP Roll Pin for Hammer

    H&K Heckler & Koch

    $3.95
    H&K HK USP Roll Pin for Hammer Cylindrical pin used for the bobbed hammer and spurred hammer strut among other uses.
    HKP-17541
    $3.95
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    New - H&K G36/SL8 (5.56/.223) Factory Recoil Buffer - HKP-00290

    HK G36, SL8 Recoil Buffer - Factory

    H&K Heckler & Koch

    $20.95
    HK G36 Or SL8 Factory Recoil Buffer   A critical spare part as these buffers deteriorate with usage and time.    
    HKP-00290
    $20.95
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