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 - HK G36/SL8 (5.56/.223) Ejector Spring - HKP-18374 HK G36/SL8 (5.56/.223) Ejector Spring
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    HK G36/SL8 (5.56/.223) Ejector Spring

    USA

    $19.95
    HK G36 & SL8 Series Of Ejector Spring. Great item to have on hand as this is prone to wear and breakage- US.
    HKP-18374
    $19.95
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  • New - H&K UMP (.40 S&W/.45 ACP/9mm) Magazine Release Axle - HKP-02159 HK UMP Magazine Release Axle
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    HK UMP Magazine Release Axle

    H&K Heckler & Koch

    $19.95
    HK UMP Magazine Release Axle  
    HKP-02159
    $19.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Lower Locking Pin - HKP-00595
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    HK UMP, USC Lower Locking Pin

    H&K Heckler & Koch

    $36.95
    HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.  
    HKP-00595
    $36.95
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  • New - H&K 91/G3 (7.62x51/.308) Magazine Catch - HKP-02073 HK91, G3 Magazine Catch
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    HK91, G3 Magazine Catch

    H&K Heckler & Koch

    $19.95
    G3 Magazine Catch High-quality HK German production units are brand-new. These also have the proper newer style cut in them and round shafts. Compatible With: HK G3 HK91 PTR91
    HKP-02073
    $19.95
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  • New - H&K HK G36 & SL8 Firing Pin - All Variants - Black - HKP-00289
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    HK G36, SL8 Firing Pin - All Variants

    H&K Heckler & Koch

    $59.95
    HK German G36/SL8 Firing Pin This is a great spare to have on hand. The firing pin fits all G36, G36K, G36C & SL8 variants. Compatible With: HK G36/G36K/G36C HK SL8
    HKP-00289
    $59.95
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  • Out Of Stock
    New - H&K HK 45/45C V3 Left Side Decock Only Lever - HKP-02706

    HK45, HK45 Compact V3 Left Side Decock Only Lever

    H&K Heckler & Koch

    $49.95
    Decock Lever ONLY For Left Side Of Frame - HK45, HK45C This control lever is for those who are right-handed and want the control lever on the left-hand side of the frame with the decock function only.  Compatible With: HK45, HK45...
    HKP-02706
    $49.95
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    $49.95
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  • New - H&K HK G36/SL8 Extractor - HKP-00287 HK G36, SL8  Extractor
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    HK G36, SL8 Extractor

    H&K Heckler & Koch

    $79.95
    G36 & HK SL8 German Extractor For Bolt Head New HK German. This is a great item to keep as a spare. Compatible With: All G36 Variants SL8-1, SL8-6
    HKP-00287
    $79.95
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  • New - H&K HK VP9/VP9SK, VP40 Polymer Support Sleeve - Black - HKP-16830 HK VP9, VP9SK, VP40 Polymer Support Sleeve
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    HK VP9, VP9SK, VP40 Polymer Support Sleeve

    H&K Heckler & Koch

    $8.95
    H&K HK VP9/VP9SK, VP40 Polymer Support Sleeve - Black New HK German VP9 & VP40 support sleeve made of polymer. A great replacement part to have on hand as they are easily marred when you depress the sleeve to access the firing pin or slide plate...
    HKP-16830
    $8.95
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    $8.95
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  • New - H&K HK 45/45C Left Side Safety Lever - Black - HKP-01770
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    HK45, HK45 Compact Left Side Safety Lever

    H&K Heckler & Koch

    $29.95
    HK 45/45C Left Side Safety Lever This control lever is for those who are right-handed and want the control lever on the left-hand side of the frame. This is the V1 selector with a decocking function and safety...
    HKP-01770
    $29.95
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  • New - H&K HK P7M10/P7M13 Retaining Pin - HKP-16436
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    HK P7M10, P7M13 Retaining Pin

    H&K Heckler & Koch

    $4.95
    H&K HK P7M10/P7M13 Retaining Pin
    HKP-16436
    $4.95
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  • New - HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style - HKP-15731
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    HK UMP, USC Stock Block B Sling Pin - Thumb Screw Style

    HDPS

    $74.95
    HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style The original thumb screw version for all stock block B's.
    HKP-15731
    $74.95
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  • New - H&K 93/53/33 (5.56/.223) Firing Pin - HKP-00192
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    HK33, HK53, HK93 Firing Pin

    H&K Heckler & Koch

    $79.95
    H&K 93, 53, & 33 (5.56/.223) Firing Pin This is the factory-correct HK German firing pin and is a great replacement part. This is also a great upgrade for your HK 223.556 clones. This part is no longer available from HK as this part is out of...
    HKP-00192
    $79.95
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