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 45/45C Extractor - HKP-01298
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    HK45, HK45 Compact Extractor

    H&K Heckler & Koch

    $49.95
    German HK45 & HK45C Extractor - New A great spare and replacement part to have. Compatible With: HK45 Tactical HK45 HK45 Compact Tactical HK45 Compact
    HKP-01298
    $49.95
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  • New - H&K HK USPC Variant 4 Right Decock Control Lever - Black - HKP-02264
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    HK USP Compact Variant 4 Right Decock Control Lever

    H&K Heckler & Koch

    $34.95
    USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...
    HKP-02264
    $34.95
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  • New - H&K HK SL8-1 Rear Sight Screw - HKP-16383
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    HK SL8-1 Sight Screw, Rear

    H&K Heckler & Koch

    $14.95
    H&K HK SL8-1 Rear Sight Screw
    HKP-16383
    $14.95
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  • New - H&K G36 (5.56/.223) Catch Axle - HKP-01872
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    HK G36 Catch Axle

    H&K Heckler & Koch

    $7.95
    HK G36 Catch Axle For All Lowers  
    HKP-01872
    $7.95
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  • New - H&K MP5 40/10 -4 Roller - HKP-00337 HK MP5 Locking Roller -4 - .40 S&W, 10mm
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    HK MP5 Locking Roller -4 - .40 S&W, 10mm

    H&K Heckler & Koch

    $19.95
    H&K Heckler and Koch HK German -4 roller for MP5 40/10 Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.  Please Note: The price listed is per roller. Order...
    HKP-00337
    $19.95
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  • New - RCM MP5 40/10 Extractor - HKP-01969 HK MP5 Extractor - .40 S&W, 10mm
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    HK MP5 Extractor - .40 S&W, 10mm

    RCM

    $34.95
    RCM US Made Extractor for HK MP5 .40 S&W and 10mm This part is made to the exact same specs as the HK German extractor final polish included. It is also a great upgrade for the clone CA and Vector builds.
    HKP-01969
    $34.95
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  • HK91, G3, HK33, HK53, HK93 Paddle Magazine Release - Anti-Rattle HK91, G3, HK33, HK53, HK93 Paddle Magazine Release - Anti-Rattle
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    HK91, G3, HK33, HK53, HK93 Paddle Magazine Release - Anti-Rattle

    MKE

    $32.95
    MKE Anti Rattle Paddle Magazine Release for HK91, HK G3s and HK33, HK53, HK93 Upgrade your rifle with MKE's anti-rattle style paddle mag release. Compatible With: HK91, G3 HK33, HK53, HK93 PSG1, MSG90 In-spec clones and custom builds
    HKP-99348
    $32.95
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  • New - H&K CC9 Extractor Spring - HKP-22130
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    HK CC9 Extractor Spring

    H&K Heckler & Koch

    $5.95
    H&K CC9 Extractor Spring Made by H&K, the extractor spring for the cc9 pistol provides spring tension to the extractor for reliable cartridge extractions. Compatible With: HK CC9  
    HKP-22130
    $5.95
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  • New - H&K MR556 A4/416 A5 Gas Block Spring - HKP-22060 HK416 A5, MR556 A4 Gas Block Spring
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    HK416 A5, MR556 A4 Gas Block Spring

    H&K Heckler & Koch

    $19.95
    HK Heckler and Koch HK416 A5, MR556 A4 Gas Block Spring German-made gas block spring for the HK MR556 A4 and HK416 A5. Compatible With: MR556 A4 HK416 A5
    HKP-22060
    $19.95
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  • Out Of Stock
    New - H&K VP9, VP40 Backstrap - Small - Gray - HKP-18125 HK VP9, VP40 Backstrap - Small - Gray

    HK VP9, VP40 Backstrap - Small - Gray

    H&K Heckler & Koch

    $19.95
    H&K VP9, VP40 Backstrap - Small - Gray   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40
    HKP-18125
    $19.95
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  • New - H&K HK MR762/417 Charging Handle Pin - HKP-16754
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    HK417, MR762 Charging Handle Pin

    H&K Heckler & Koch

    $6.95
    H&K HK MR762/417 Charging Handle Pin HK MR762 & HK 417 Clamping Sleeve for plate on charging handle. There are two of these pins used on the charging handle. Compatible With: HK MR762 HK 417
    HKP-16754
    $6.95
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  • New - H&K HK MR762/417 Axle Extractor Retaining Pin - HKP-16810
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    HK417, MR762 Axle Extractor Retaining Pin

    H&K Heckler & Koch

    $8.95
    H&K HK MR762/417 Axle Extractor Retaining Pin This extractor retaining pin is constructed of durable, black finished, steel and is an OEM factory original H&K component. This retaining pin is designed to fit the HK417 & MR762 model of rifles...
    HKP-16810
    $8.95
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