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 P7 PSP Magazine Catch - HKP-01344 HK P7 PSP Magazine Catch
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    HK P7 PSP Magazine Catch

    H&K Heckler & Koch

    $27.95
    HK P7 PSP Magazine Catch Compatible With: PSP
    HKP-01344
    $27.95
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  • New - HK P7M10 Extractor - HKP-01999
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    HK P7M10 Extractor

    H&K Heckler & Koch

    $81.95
    HK P7M10 Extractor Compatible With: HK P7M8
    HKP-01999
    $81.95
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    $81.95
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  • New - H&K HK Mark 23 Hammer Strut Spring - HKP-01581
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    HK Mark 23 Hammer Strut Spring

    H&K Heckler & Koch

    $8.95
    HK Mark 23 Hammer Strut Spring
    HKP-01581
    $8.95
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    $8.95
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  • New - H&K HK 416 Roll Pin For 33mm Front Folding Sight - HKP-14144
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    HK416 Front Sight Roll Pin - Folding 33mm

    H&K Heckler & Koch

    $4.95
    HK 416 Roll Pin For 33mm Front Folding Sight This version is the enhanced (longer) roll pin for a more secure fitment. 
    HKP-14144
    $4.95
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    $4.95
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  • New - H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin - HKP-02469 HK G36, SL8 Firing Pin Retaining Pin
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    HK G36, SL8 Firing Pin Retaining Pin

    H&K Heckler & Koch

    $10.95
    H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin Compatible With: HK G36 HK SL8
    HKP-02469
    $10.95
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  • New - HK G36/SL8 (5.56/.223) Bolt Heads Ejector - HKP-18371 HK G36, SL8 Bolt Head Ejector - USA
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    HK G36, SL8 Bolt Head Ejector - USA

    $13.95
    HK G36/SL8 Ejector For All G36, SL8 bolts -US Made
    HKP-18371
    $13.95
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  • HK416, MR556 Mag Catch - Ambi HK416, MR556 Mag Catch - Ambi
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    HK416, MR556 Mag Catch - Ambi

    H&K Heckler & Koch

    $92.95
    H&K HK MR556, HK416 Mag Catch - Ambi Factory HK ambidextrous magazine catch/release. Compatible With: HK416 A5 HK MR556 A4 NOT compatible with earlier variants with single-side controls
    HKP-22289
    $92.95
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  • On Sale
    New - B&T Bolt or Suppressor Pouch - Small - Velcro Mount - HKP-21886 Bolt or Suppressor Pouch - Small - Velcro Mount
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    Bolt or Suppressor Pouch - Small - Velcro Mount

    B&T Brugger & Thomet

    Now: $9.95
    Was: $19.95
    B&T Bolt or Suppressor Pouch - Small - Velcro Mount The B&T Bolt Pouch is a Velcro attaching pouch to securely hold and protect your .308 bolt during transport and field operations. Designed for the B&T APR338 bolt but will fit other,...
    HKP-21886
    Now: $9.95
    Was: $19.95
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  • New - H&K HK Mark 23 Magazine Release Spring - HKP-01789
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    HK Mark 23 Magazine Release Spring

    H&K Heckler & Koch

    $10.95
    HK Mark 23 Magazine Release Spring
    HKP-01789
    $10.95
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  • Out Of Stock
    New - H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression Spring - HKP-16496

    HK UMP, USC, G36, SL8 Compression Spring - Index Plate

    H&K Heckler & Koch

    $7.95
    H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate Compression Spring
    HKP-16496
    $7.95
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    $7.95
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    Out Of Stock
  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Slide For Lower - HKP-00268
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    HK UMP, USC Conversion Slide

    H&K Heckler & Koch

    $19.95
    HK USC & UMP Slide For Lower - German New HK German USC slide for conversion of UMP lower. 
    HKP-00268
    $19.95
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  • Used - H&K USC/SL8 (.45 ACP/5.56/.223) Buttstock Screw - HKP-01649 HK USC, SL8 Buttstock Allen Screw
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    HK USC, SL8 Buttstock Allen Screw

    H&K Heckler & Koch

    $17.95
    Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item is factory HK and a common spare.
    HKP-01649
    $17.95
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