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 417/MR762 A4 Bolt Catch/Release - Ambi - HKP-21960 HK417, MR762A4 Bolt Catch, Release - Ambi
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    HK417, MR762A4 Bolt Catch, Release - Ambi

    H&K Heckler & Koch

    $53.95
    Heckler and Koch MR762 A4 Bolt Catch/Release - Ambi Factory ambidextrous bolt catch lever for the MR762 A4.  The A4 variant of the MR762 introduced ambi controls for the bolt catch/release not previously available on the A1 variant...
    HKP-21960
    $53.95
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  • New - H&K 416 Front Takedown Pin - HKP-21862 HK416, MR556 Takedown Pin - Front - A4 Style
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    HK416, MR556 Takedown Pin - Front - A4 Style

    H&K Heckler & Koch

    $26.95
    H&K HK416, MR556 A4 Front Takedown Pin  The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...
    HKP-21862
    $26.95
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  • Out Of Stock
    New - GSG9 HK416, MR556 Firing Pin - HKP-20650 HK416, MR556 Firing Pin - Silver

    HK416, MR556 Firing Pin - Silver

    GSG9

    $34.95
    Firing Pin for HK 416 & MR556 Firearm - USA - GSG9 US made HK 416 & MR556 Made from hardened stainless steel. Compatible With: HK416 HK MR556 HK CR556 HK M27
    HKP-20650
    $34.95
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    $34.95
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  • New - H&K VP9SK, VP40SK Backstrap - Small - Gray - HKP-18969 HK VP9SK, VP40SK Backstrap - Small - Gray
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    HK VP9SK, VP40SK Backstrap - Small - Gray

    H&K Heckler & Koch

    $29.95
    H&K VP9SK, VP40SK Backstrap - Small - Gray New HK German manufacture. Compatible With: HK VP9SK HK VP40SK
    HKP-18969
    $29.95
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  • New - Detent Plate For HK45, HK45C Variant 1, 2 - HKP-01807 HK45, HK45C Detent Plate for Variant 1, 2
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    HK45, HK45C Detent Plate for Variant 1, 2

    H&K Heckler & Koch

    $14.50
    Detent Plate For HK45, HK45C Variant 1, 2 Compatible With: HK45 HK45 Compact
    HKP-01807
    $14.50
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  • New - H&K HK Mark 23 Recoil Assembly Compression Spring - HKP-16644
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    HK Mark 23 Recoil Assembly Compression Spring

    H&K Heckler & Koch

    $19.95
    Mark 23 Recoil Assembly Compression Spring Brand new HK German recoil spring for the HK Mark 23 or SOCOM .45 Pistol. A high wear item that needs to be changed & replaced often as this is a consumable part.
    HKP-16644
    $19.95
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  • New - H&K HK P30 Recoil Rod Compression Spring - HKP-16653
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    HK P30 Recoil Rod Compression Spring

    H&K Heckler & Koch

    $7.95
    H&K HK P30 Recoil Rod Compression Spring
    HKP-16653
    $7.95
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  • New - H&K HK USP/Tactical .45 ACP Lanyard Loop Insert - HKP-02385 HK USP, USP Tactical Lanyard Loop Insert - .45 ACP
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    HK USP, USP Tactical Lanyard Loop Insert - .45 ACP

    H&K Heckler & Koch

    $18.95
    HK USP/Tactical .45 ACP Lanyard Loop Insert This item does not have the lockout device installed for those who prefer not to have this device on their firearm.
    HKP-02385
    $18.95
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  • Out Of Stock
    New - H&K HK USP Hammer Rebound Spring - HKP-16678

    HK USP Hammer Spring

    H&K Heckler & Koch

    $7.95
    H&K HK USP Hammer Rebound Spring For use on DAO only NOT LEM hammers for the following pistols. Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .357 SIG HK USP Compact .45...
    HKP-16678
    $7.95
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  • New - H&K G36/SL8 (5.56/.223) Cocking Handle Spring - HKP-01862
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    HK G36, SL8 Cocking Handle Spring

    H&K Heckler & Koch

    $10.95
    HK German G36 Cocking Handle Spring - All Variants Compatible With: G36 - all variants SL8 - all variants
    HKP-01862
    $10.95
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  • New - HK G36 (5.56/.223) Cocking Handle Bushing - HKP-18368 HK G36 Cocking Handle Bushing - USA
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    HK G36 Cocking Handle Bushing - USA

    $5.95
    G36 Cocking Handle Bushing - US Made
    HKP-18368
    $5.95
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  • New - H&K G36/SL8 (5.56/.223) Barrel Retaining Nut - HKP-16341 HK G36, SL8  Barrel Retaining Nut - 5.56 / .223
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    HK G36, SL8 Barrel Retaining Nut - 5.56 / .223

    H&K Heckler & Koch

    $29.95
    HK G36 & SL8 Barrel Retaining Nut - German HK Compatible With: SL8 (all models and variants) G36E G36K G36C All other G36 Variants
    HKP-16341
    $29.95
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