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 Sear Spring - HKP-01630
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    HK Mark 23 Sear Spring

    H&K Heckler & Koch

    $11.99
    HK Mark 23 Sear Spring
    HKP-01630
    $11.99
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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 HK P30/P30L Control Latch - HKP-02600
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    HK P30, P30L Control Latch

    H&K Heckler & Koch

    $8.95
    New HK German Control Latch For HK P30, P30L Pistols. Compatible With: HK P30 HK P30L
    HKP-02600
    $8.95
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    $8.95
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  • New - H&K HK USP .45 ACP Recoil Rod - HKP-16998 HK USP .45 ACP Recoil Rod
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    HK USP .45 ACP Recoil Rod

    H&K Heckler & Koch

    $29.95
    H&K HK USP .45 ACP Recoil Rod Factory German HK correct Recoil Rod for the HK USP 45 Full Size pistol. Compatible With: HK USP 45 Full Size Pistol
    HKP-16998
    $29.95
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  • Out Of Stock
    New - H&K HK USP/USPC Disconnector - HKP-02685

    HK USP, USP Compact Disconnector

    H&K Heckler & Koch

    $9.95
    HK USP & USPC Disconnector Compatible With: USP 45 USP 40 USP 9mm USPC 45 USPC 40 USCP 9m
    HKP-02685
    $9.95
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    $9.95
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  • Out Of Stock
    New - HK UMP/USC/SL8/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Fixed Rear Sight Flat Spring - HKP-16635

    HK UMP, USC, SL8, G36 Fixed Rear Sight Flat Spring

    H&K Heckler & Koch

    $8.95
    HK Heckler and Koch Fixed Rear Sight Flat Spring or Leaf Spring for HK G36, HK SL8 and HK USC, HK UMP Compatible With: G36 SL8 USC UMP
    HKP-16635
    $8.95
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    $8.95
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  • New - H&K MSG90 (7.62x51/.308) -4 Rollers 7.96mm Set -Titanium - HKP-02451
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    HK MSG90 Locking Roller -4 - 7.96mm Set -Titanium

    H&K Heckler & Koch

    $329.95
    MSG90 (7.62x51/.308) -4 Rollers 7.96mm Set -Titanium Half moon rollers.  Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need to order - plus-size rollers...
    HKP-02451
    $329.95
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    $329.95
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  • HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm
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    HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm

    MKE

    $26.95
    HK Magazine Catch High-quality magazine catch manufactured by MKE, built to the latest style for improved reliability on factory and clone firearms. Machined from a single piece of steel for increased durability and smoother, more consistent mag...
    HKP-22549
    $26.95
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    $26.95
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  • HK MR556 A4 Hammer - Incomplete - Semi-Auto HK MR556 A4 Hammer - Incomplete - Semi-Auto
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    HK MR556 A4 Hammer - Incomplete - Semi-Auto

    H&K Heckler & Koch

    $43.95
    Heckler and Koch Hammer for HK MR556 Semi-Auto rifles Factory-original German steel hammer for MR556 A4 rifles. Designed as a direct replacement for worn or damaged hammers in MR556 A1 and A4 trigger assemblies. Compatible With: MR556A1 MR556...
    HKP-22384
    $43.95
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  • New - MKE 90 Series Sear & Trigger Axle - HKP-22233 MKE 90 Series Sear & Trigger Axle MKE HKP-22233
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    HK90 Series Trigger and Catch Axle - USA

    MKE

    $1.99
    HK Sear and Trigger Axle For 90 Series - SURPLUS MKE sear and trigger axle for the 90 series style trigger packs. Each axle pin (aka pivot pin) measures .197 inches (5.0mm). Each HK trigger pack uses a total of 2 of these axle pins per trigger pack...
    HKP-22233
    $1.99
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    $1.99
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  • New - H&K CC9 Firing Pin Disconnect - HKP-22140
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    HK CC9 Firing Pin Disconnect

    H&K Heckler & Koch

    $5.95
    H&K CC9 Firing Pin Disconnect OEM firing pin disconnect for the H&K CC9 pistol. Controls firing pin engagement during the firing cycle. Compatible With: HK CC9    
    HKP-22140
    $5.95
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