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 MR556/MR762/417 Index Pin Spring - HKP-17021
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    HK417, MR556, MR762 Index Pin Spring

    H&K Heckler & Koch

    $7.95
    H&K HK MR556/MR762/417 Index Pin Spring   Compatible With: HK MR556 HK 417 HK MR762  
    HKP-17021
    $7.95
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  • New - H&K G36/SL8 (5.56/.223) Bolt Catch Spring - HKP-01861
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    HK G36, SL8 Bolt Catch Spring

    H&K Heckler & Koch

    $9.95
    HK German G36 & SL8 Bolt Catch Spring  
    HKP-01861
    $9.95
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    $9.95
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  • HK UMP Paddle Magazine Release - Extended HK UMP Paddle Magazine Release - Extended
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    HK UMP Paddle Magazine Release - Extended

    HKP HK Parts

    $34.95
    HKP HK Parts Extended Paddle Magazine Release for HK UMP 9mm, .40 S&W, .45 ACP Billeted alloy UMP magazine release. This is a very common repair and replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release...
    HKP-17919
    $34.95
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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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  • Out Of Stock
    New - MM HK 21 (7.62x51/.308) Belt Box Adapter - HKP-01844 HK 21 Ammunition Belt Box Adapter

    HK 21 Ammunition Belt Box Adapter

    Michaels Machines

    $274.95
    Belt Box Adapter A new custom-made adapter - allows you to use HK German factory HK21E belt boxes on the HK21 older style or original style belt feds. It is a drop-in design that will enable easy and quick use of the superior HK21E belt boxes...
    HKP-01844
    $274.95
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    $274.95
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  • New - H&K 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) Anti-Rattle Mag Release - HKP-01126 HK33, HK53, HK93, HK91, G3 Paddle Magazine Release - Anti-Rattle
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    HK33, HK53, HK93, HK91, G3 Paddle Magazine Release - Anti-Rattle

    H&K Heckler & Koch

    $64.95
    Heckler and Koch Anti Rattle Paddle Magazine Release This item is a new HK German genuine part not used or surplus for installation on all HK .223 and .308 HK rifles. This is the highly desired anti-rattle-style paddle mag release. Compatible...
    HKP-01126
    $64.95
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  • Out Of Stock
    New - B&T APC Takedown Pin - Front - HKP-21737 B&T APC Takedown Pin - Front

    B&T APC Takedown Pin - Front

    B&T Brugger & Thomet

    $11.95
    B&T APC Takedown Pin - Front Factory B&T front take down pin for the APC receiver. Compatible With: APC Series Standard receiver Glock receiver Sig receiver
    HKP-21737
    $11.95
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    $11.95
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  • New - H&K VP9SK, VP40SK Backstrap - Small - Black - HKP-18306 HK VP9SK, VP40SK Backstrap - Small - Black
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    HK VP9SK, VP40SK Backstrap - Small - Black

    H&K Heckler & Koch

    $25.95
    H&K VP9SK, VP40SK Backstrap - Small - Black New HK German manufacture. Compatible With: HK VP9SK HK VP40SK
    HKP-18306
    $25.95
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    $25.95
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  • Out Of Stock
    New - HKP HK MR762/417 Titanium Firing Pin - HKP-17768

    HK417, MR762 Firing Pin - Titanium

    HKP HK Parts

    $49.95
    HK MR762 & HK417 Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made  in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK MR 762 & HK417 weapon system. Get the...
    HKP-17768
    $49.95
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    $49.95
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  • New - H&K P30SK Backstrap - Small - Black - HKP-18081
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    HK P30SK Backstrap - Small - Black

    H&K Heckler & Koch

    $29.95
    H&K P30SK Backstrap - Small - Black   Compatible With: HK P30SK  
    HKP-18081
    $29.95
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  • New - H&K HK USP Control Decock Only V4 Safety Lever - HKP-01417
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    HK USP Control Decock Only V4 Safety Lever

    H&K Heckler & Koch

    $44.95
    H&K HK USP Control Decock Only V4 Safety Lever Lever for left-handers to have the de-cocker (no safety) function. The control lever fits on the right side of the frame. Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 ACP  
    HKP-01417
    $44.95
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  • New - H&K HK USPC Slide Release Lever - HKP-02252 HK USP Compact Slide Release Lever
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    HK USP Compact Slide Release Lever

    H&K Heckler & Koch

    $64.95
    HK USPC Slide Release Lever New HK German factory part. Compatible With: HK USP Compact 9mm HK USP Compact .357 HK USP Compact .40 HK USP Compact .45 HK USP Compact Tactical Models
    HKP-02252
    $64.95
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