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 HK416/417/MR556/MR762 Catch Spring - Magazine - HKP-02620
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    HK416, MR556, HK417, MR762 Magazine Catch Spring

    H&K Heckler & Koch

    $9.95
    HK MR556, HK 416 & MR762 & 417 Magazine Catch Spring HK German manufacture. Compatible With: HK MR556 HK 416, M27 HK MR762 HK 417, G28 AR15, M4 & M16 firearms
    $9.95
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  • On Sale
    New - HKP HK VP9/VP40 Enhanced Support Sleeve - Black - BLEMISHED - HKP-18677-BL-B HK VP9, VP40 Enhanced Support Sleeve - Black - BLEMISHED
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    HK VP9, VP40 Enhanced Support Sleeve - Black - BLEMISHED

    HKP HK Parts

    Now: $7.46
    Was: $19.95
    HKP HK VP9/VP40 Enhanced Support Sleeve COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The support sleeve in the VP series pistols is a crucial component that...
    Now: $7.46
    Was: $19.95
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    Now: $7.46
    Was: $19.95
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  • New - H&K HK USP/USPC/45/45C New Style Hammer - HKP-01256
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    HK45, HK45 Compact, USP, USP Compact New Style Hammer

    H&K Heckler & Koch

    $55.95
    H&K HK USP/USPC/45/45C New Style Hammer Will work for USP/USPC variants 1-4, 9 & 10. This part replaces the older HK hammer without the sear cutout (part #214825). Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact...
    $55.95
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  • New - H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring - HKP-01866
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    HK UMP, G36 Sear Spring

    H&K Heckler & Koch

    $8.95
    HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.  
    $8.95
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  • New - H&K HK USP/USPC Lanyard Loop Insert - HKP-01935 HK USP, USP Compact Lanyard Loop Insert
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    HK USP, USP Compact Lanyard Loop Insert

    H&K Heckler & Koch

    $13.95
    HK USP/USPC Lanyard Loop Insert Compatible With: HK USP 9mm HK USP .40 HK USP Compact 9mm HK USP Compact .40 / .357 HK USP Compact .45
    $13.95
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  • Out Of Stock
    New - H&K HK416/MR556 Magazine Catch - HKP-15458 HK416, MR556 Magazine Catch

    HK416, MR556 Magazine Catch

    H&K Heckler & Koch

    $50.95
    H&K HK MR556/416 Magazine Catch New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms. Compatible With: HK MR556 HK 416
    $50.95
    Out Of Stock
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    $50.95
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  • New - H&K HK VP9/VP9SK/VP9 Match/Tactical, HK VP40/Tactical Magazine Release/Catch - Black - HKP-16817
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    HK VP9, VP9SK, VP9 Match, VP9 Tactical, VP40, VP40 Tactical Magazine Release/Catch

    H&K Heckler & Koch

    $24.95
    H&K HK VP9/VP9SK/VP9 Match/Tactical, HK VP40/Tactical Magazine Release/Catch New HK German manufacture. Compatible With: HK VP9, VP9 Tactical HK VP9SK HK VP40, VP40 Tactical
    $24.95
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  • New - H&K HK USP 9mm / .40 S&W High Capacity Magazine Locking Plate - HKP-02165 HK USP Magazine Locking Plate - 9mm / .40 S&W - High Capacity
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    HK USP Magazine Locking Plate - 9mm / .40 S&W - High Capacity

    H&K Heckler & Koch

    $6.95
    HK USP 9mm / .40 S&W High Capacity Magazine Locking Plate Compatible With: HK USP 9mm HK USP .40
    $6.95
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  • Out Of Stock
    New - HKP HK Mark 23, SOCOM Titanium Firing Pin - HKP-17803

    HK Mark 23, SOCOM Firing Pin - Titanium

    HKP HK Parts

    $49.95
    Ultimate Firing Pin Mark 23, Socom - Titanium - Grade 6 A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium...
    $49.95
    Out Of Stock
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    $49.95
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  • New - H&K HK MR556/762/416/417 Bolt Catch Spring - HKP-16661
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    HK416, HK417, MR556, MR762 Bolt Catch Spring

    H&K Heckler & Koch

    $6.95
    H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417
    $6.95
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  • New - H&K HK MR556/MR762/416 Forward Assist Assembly - HKP-16528 HK416, MR556, MR762 Forward Assist Assembly
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    HK416, MR556, MR762 Forward Assist Assembly

    H&K Heckler & Koch

    $74.95
    H&K HK MR556/MR762/416 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK MR556 HK 416 HK MR762
    $74.95
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    $74.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Complete Firing Pin Assembly - HKP-00609
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    HK UMP, USC Firing Pin - Complete Assembly - .40 S&W / .45 ACP / 9mm

    H&K Heckler & Koch

    $82.95
    HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG's
    $82.95
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    $82.95
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