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 - HKP HK 91/G3 Extractor - Enhanced Coated Polish - HKP-22182-M HK91, G3 Extractor - Enhanced Coated Polish
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    HK91, G3 Extractor - Enhanced Coated Polish

    HKP HK Parts

    $24.95
    HKP HK 91/G3 Extractor - Enhanced Coated Polish  Built for dependable performance, this polished and coated extractor delivers smooth cycling and consistent extraction. A great choice for both upgrades and routine replacements. Compatible With: HK...
    HKP-22182-M
    $24.95
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    New - H&K MR556 A4 Hammer Spring - HKP-22083

    HK MR556 A4 Hammer Spring

    H&K Heckler & Koch

    $5.00
    H&K MR556 A4 Hammer Spring Genuine H&K hammer spring for the MR556 A4. Compatible With: HK MR556 A4
    HKP-22083
    $5.00
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    $5.00
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  • New - HKP HK VP9/VP9SK/VP40 Firing Pin Striker - HKP-20464 HK VP9, VP9SK, VP40 Firing Pin Striker
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    HK VP9, VP9SK, VP40 Firing Pin Striker

    HKP HK Parts

    $39.95
    HKP HK VP9/VP9SK/VP40 Firing Pin Striker This firing pin fits all models of VP series pistols. Compatible With: HK VP9, VP9 tactical, VP9L, VP9 OR HK VP9SK VP40, VP40 tactical
    HKP-20464
    $39.95
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  • New - H&K VP9, VP40 Grip Panel Right Side - Medium - Gray - HKP-18175 HK VP9, VP40 Grip Panel Right Side - Medium - Gray
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    HK VP9, VP40 Grip Panel Right Side - Medium - Gray

    H&K Heckler & Koch

    $16.95
    H&K VP9, VP40 Grip Panel Right Side - Medium - Gray New HK German manufactured. Right side, medium size. Perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. Compatible With: HK VP9 HK VP9A1 F, VP9A1 K HK VP40
    HKP-18175
    $16.95
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  • New - H&K HK MR762/HK417 Cam Pin - HKP-16844
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    HK417, MR762 Cam Pin

    H&K Heckler & Koch

    $64.95
    H&K HK MR762/HK417 Cam Pin   Compatible With: HK MR762 HK 417
    HKP-16844
    $64.95
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  • Used - H&K HK P9S 9mm Extractor - HKP-01997
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    HK P9S 9mm Extractor

    H&K Heckler & Koch

    $79.95
    HK P9S 9mm Extractor This extractor is no longer manufactured and is hard to find. This is the last remaining stock that HK had in inventory. Last call for this part. 
    HKP-01997
    $79.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Spring - HKP-01900
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    HK UMP, USC Bolt Catch Spring

    H&K Heckler & Koch

    $8.95
    HK UMP & USC Bolt Catch Spring Compatible With: HK UMP HK USC
    HKP-01900
    $8.95
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    New - H&K 21 (7.62x51/.308) Feed Mechanism Pawl - HKP-02071

    HK 21 (7.62x51/.308) Feed Mechanism Pawl

    H&K Heckler & Koch

    $69.95
    HK 21E & M13 Feed Mechanism Pawl
    HKP-02071
    $69.95
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  • HK MP5, AP5 Extractor Spring HK MP5, AP5 Extractor Spring
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    HK MP5, AP5 Extractor Spring

    MKE

    $6.95
    MKE HK MP5, MP5K - Extractor Spring - 9mm Extractor spring for all 9mm HK variants including clones. This spring is the #1 repair & replacement item for the MP5 and MP5K family of firearms. Compatible With: HK MP5 HK MP5K HK SP5 HK SP5K HK94 HK...
    HKP-22481
    $6.95
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  • New - H&K HK MP5/91/93/53/33/G3 Sear/Catch - HKP-01459
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    HK91, G3, MP5 Sear Catch - Steel - New Build

    H&K Heckler & Koch

    $69.95
    Heckler & Koch's Sear Catch Release - Complete For HK 90 Series Trigger Packs New HK German manufacture. Sear/Catch complete with installed detent, spring, and roll pin. Compatible With: HK MP5, HK MP5K HK91 HK G3 HK33, HK53, HK93 PTR Other 90...
    HKP-01459
    $69.95
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  • New - HK UMP .45 Magazine Locking Plate - HKP-20136 HK UMP Magazine Locking Plate - .45 ACP - US
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    HK UMP Magazine Locking Plate - .45 ACP - US

    USA

    $6.95
    HK UMP .45 Magazine Locking Plate   Made in the USA
    HKP-20136
    $6.95
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  • New - H&K HK MR556/MR762/416 Dowel Pin - HKP-19528
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    HK416, MR556, MR762 Dowel Pin

    $9.95
    H&K HK MR556/MR762/416 Dowel Pin Compatible With: HK MR556 HK 416 HK MR762
    HKP-19528
    $9.95
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