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 UMP, USC & G36, SL8 Sear - HKP-19555 HK UMP, USC & G36, SL8 Sear

    HK UMP, USC & G36, SL8 Sear

    HKP HK Parts

    $14.95
    HK Complete Sear G36, UMP, USC, SL8 Made in the USA Compatible With: HK UMP HK USC HK G36 HK SL8
    HKP-19555
    $14.95
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    $14.95
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  • New - H&K HK MR762/417 Handguard Compression Spring - HKP-16796
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    HK417, MR762 Handguard Compression Spring

    H&K Heckler & Koch

    $8.95
    H&K HK MR762/417 Handguard Compression Spring   Heckler & Koch compression spring for HK MR762 and HK 417 handguard   Compatible With: HK MR 762 HK 417
    HKP-16796
    $8.95
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    $8.95
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  • New - HK G41 Firing Pin - HKP-02050
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    HK G41 Firing Pin

    H&K Heckler & Koch

    $24.95
    HK G41 Firing Pin
    HKP-02050
    $24.95
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    $24.95
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  • New - H&K HK Mark 23 Secondary Recoil Compression Spring - HKP-16642
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    HK Mark 23 Secondary Recoil Compression Spring

    H&K Heckler & Koch

    $19.95
    H&K HK Mark 23 Secondary Recoil Compression Spring
    HKP-16642
    $19.95
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  • New - H&K HK Mark 23 Ejector - HKP-01778 HK Mark 23 Ejector
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    HK Mark 23 Ejector

    H&K Heckler & Koch

    $13.95
    HK Mark 23 Ejector
    HKP-01778
    $13.95
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  • New - H&K P2000 Backstrap w/ Safety - Small - Black - HKP-01564 HK P2000 Backstrap with Safety - Small - Black
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    HK P2000 Backstrap with Safety - Small - Black

    H&K Heckler & Koch

    $41.95
    H&K P2000 Backstrap w/ Safety - Small - Black Compatible With: HK P2000 9mm HK P2000 40 S&W HK P2000 357 SIG
    HKP-01564
    $41.95
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  • HK USP Firing Pin - New Style - Titanium HK USP Firing Pin - New Style - Titanium
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    HK USP Firing Pin - New Style - Titanium

    HKP HK Parts

    $49.95
    HKP HK USP New Style Titanium Firing Pin A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium pins also carry...
    HKP-17826
    $49.95
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  • New - H&K HK USP Old Style Firing Pin Block - HKP-01927
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    HK USP Firing Pin Block - Old Style - .40 S&W / .45 ACP

    H&K Heckler & Koch

    $32.95
    HK USP Old Style Firing Pin Block Compatible With: HK USP 45 HK USP 40
    HKP-01927
    $32.95
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  • New - HK German Hand Stop Screw - HKP-16736
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    HK Ump, USC Handstop Screw - Cylindrical

    H&K Heckler & Koch

    $9.95
    HK German Hand Stop Screw     #21 Cylindrical screw, handstop 5 x 16 mm 219414
    HKP-16736
    $9.95
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  • Out Of Stock
    New - H&K 21 (7.62x51/.308) Countersunk Screw - 6x12MM - HKP-16424

    HK21 Countersunk Screw - 6x12mm

    H&K Heckler & Koch

    $4.95
    HK 21 Countersunk Screw - 6x12MM
    HKP-16424
    $4.95
    Out Of Stock
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    $4.95
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  • New - H&K PSG1/MSG90 (7.62x51/.308) Ejector Lever - HKP-00537 HK PSG1, MSG90 Ejector Lever
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    HK PSG1, MSG90 Ejector Lever

    H&K Heckler & Koch

    $79.95
    Heckler and Koch Ejector Lever for HK PSG1, MSG90 German-made ejector lever for PSG1 and MSG90 platforms. Direct replacement part built to original factory-spec for reliable extraction and correct bolt head function. Compatible With: PSG1, MSG90
    HKP-00537
    $79.95
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  • HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto
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    HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto

    MKE

    $4.95
    MKE AP5, HK MP5, G3 Full-Auto Elbow Spring with Roller This elbow spring is manufactured by MKE from steel and is used in MP5 and G3 pattern trigger packs. It provides proper tension and function for the trigger pack elbow and is suitable for...
    HKP-22489
    $4.95
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