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.
    $19.95
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  • New - H&K UMP (9mm) Extractor - HKP-00266
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    HK UMP Extractor - 9mm

    H&K Heckler & Koch

    $60.95
    New HK German USC/UMP 9mm Extractor This is the perfect spare part to have for your UMP or USC 9mm conversion. Hard to find and only available here at HKPARTS.
    $60.95
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  • New - H&K VP/P30/P2000 Backstrap Pin Punch - HKP-21973
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    HK VP, P30, P2000 Backstrap Pin Punch

    H&K Heckler & Koch

    $9.95
    H&K VP/P30/P2000 Backstrap Pin Punch Pin punch designed for removing and installing the backstrap pin on select H&K pistol models. Sized at 7/64", this tool ensures a proper fit without damaging the frame or pin. Compatible With HK VP9/VP9SK HK...
    $9.95
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  • New - HKP HK VP9/VP9SK/VP40 Hex Button Quick Detach Slide Plate - HKP-18111-M HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate
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    HK VP9, VP9SK, VP40 Hex Button Quick Detach Slide Plate

    HKP HK Parts

    $34.95
    HKP HK VP9/VP9SK, VP40 Hex Button Quick Detach Slide Plate   The HK Parts Quick Detach Slide Plate for the HK VP series of pistols is ideal for those that want the ability of quickly and efficiently access the firing pin, sleeve assembly. The quick...
    $34.95
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  • New - H&K HK MR556/MR762/416/417 Pistol Grip Screw - HKP-02679
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    HK416, MR556, HK417, MR762 Pistol Grip Screw

    H&K Heckler & Koch

    $9.95
    H&K HK MR556/MR762/416/417 Pistol Grip Screw This is the screw used to retail all battle grips/pistol grips on the HK and standard AR15 and M16 firearms. Compatible With: HK MR556 HK416 HK MR762 HK417
    $9.95
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  • New - H&K HK MR556/416 Ejector Retaining Pin - HKP-00053
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    HK416, MR556 Ejector Retaining Pin

    H&K Heckler & Koch

    $6.95
    H&K HK MR556/416 Ejector Retaining Pin This factory HK German part is the pin that holds the ejector in place on the bolt head. Great to have as a spare part. Compatible With: HK MR556 HK 416
    $6.95
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  • HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284 HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284
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    HK MP5 Barrel Retaining Pin - 5.015mm

    H&K Heckler & Koch

    $14.95
    H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel.  Compatible With:  HK MP5, SP5, MP5K,...
    $14.95
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  • New - MKE HK MP5/K 9mm Extractor - HKP-21919 HK MP5, MP5K Extractor - 9mm - MKE
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    HK MP5, MP5K Extractor - 9mm - MKE

    MKE

    $19.95
    MKE HK MP5/K 9mm Extractor Keep your MP5 or MP5K running strong with this MKE 9mm extractor. Perfect for replacing a worn part or completing a build, it’s made to HK specs for smooth, reliable performance you can count on. Compatible With: HK...
    $19.95
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  • New - H&K HK VP9, HK VP40 Disassembly Lever - HKP-16818 HK VP9, VP40 Disassembly Lever
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    HK VP9, VP40 Disassembly Lever

    H&K Heckler & Koch

    $24.95
    Disassembly Lever VP9 & VP40 New HK German VP9, VP40 take down lever. This is the lever that is designed to take the remove the slide from the frame.  All steel manufacture. Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP40
    $24.95
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  • Out Of Stock
    New - H&K HK MR556/MR762/416 Fire Control Detent Stop Pin - HKP-15272

    HK416, MR556, MR762 Fire Control Detent Stop Pin

    H&K Heckler & Koch

    $20.95
    H&K HK MR556/MR762/416 Fire Control Detent Stop Pin HK German manufacture. Compatible With: HK MR556 HK416 HK MR762
    $20.95
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    $20.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin - HKP-16517
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    HK UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin

    H&K Heckler & Koch

    $5.95
    H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
    $5.95
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  • New - H&K HK Mark 23 Firing Pin Block Spring - HKP-01599
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    HK Mark 23 Firing Pin Block Spring

    H&K Heckler & Koch

    $9.99
    HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45
    $9.99
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