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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  • On Sale
    Used - HK German -2 Locking Roller Standard 7.98mm - Used - HKP-20600 HK German -2 Locking Roller Standard 7.98mm - Used
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    HK German -2 Locking Roller Standard 7.98mm - Used

    H&K Heckler & Koch

    Now: $8.96
    Was: $9.95
    HK German Locking Roller Standard 7.98mm - Used The proper roller size is essential for proper head spacing and bolt gap. Used German German-made -2 or 7.98mm roller, each roller is priced per roller. Used HK German. HK locking roller, -2, 7.98mm. HK...
    Now: $8.96
    Was: $9.95
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  • On Sale
    New - H&K VP9/VP9SK, HK VP40 Firing Pin w/ Striker - HKP-16833 HK VP9, VP9SK, VP40 Firing Pin with Striker
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    HK VP9, VP9SK, VP40 Firing Pin with Striker

    H&K Heckler & Koch

    Now: $53.96
    Was: $59.95
    H&K VP9/VP9SK, HK VP40 Firing Pin w/ Striker New HK German factory firing pin that fits all models of VP series pistols. Compatible With: HK VP9, VP9 Tactical, VP9L, VP9 OR HK VP9SK VP40, VP40 Tactical
    Now: $53.96
    Was: $59.95
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  • On Sale
    New - H&K HK P2000/P30/USP Heavy Firing Pin Block Spring - HKP-01603
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    HK P30, P2000, USP Block Spring - Heavy Firing Pin

    H&K Heckler & Koch

    Now: $5.36
    Was: $5.95
    HK P2000 & P30 Heavy Firing Pin Block Spring This is the heavy LEM spring found on the LEM conversion. Compatible With: Any post-2005 production USP & UPSC P2000 P2000SK P30 P30SK Will fit the HK45 & HK45C models
    Now: $5.36
    Was: $5.95
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    Now: $5.36
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  • On Sale
    New - H&K HK USPC Recoil Rod Assemblies Snap Ring - HKP-01944
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    HK USP Compact Recoil Rod Assemblies Snap Ring

    H&K Heckler & Koch

    Now: $7.16
    Was: $7.95
    HK USPC Recoil Rod Assemblies Snap Ring A great item to have on hand as they are prone to falling off when doing scheduled maintenance and cleaning on the recoil assemblies. Compatible With: HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact ...
    Now: $7.16
    Was: $7.95
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    Now: $7.16
    Was: $7.95
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  • On Sale
    New - H&K VP9, VP40 Grip Panel Left Side - Small - Black - HKP-16807 HK VP9, VP40 Grip Panel Left Side - Small - Black
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    HK VP9, VP40 Grip Panel Left Side - Small - Black

    H&K Heckler & Koch

    Now: $16.16
    Was: $17.95
    H&K VP9, VP40 Grip Panel Left Side - Small - Black   New HK German manufactured. Left side size small perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol.   Compatible With: HK VP9 HK VP40 HK VP9A1 F HK...
    Now: $16.16
    Was: $17.95
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    Now: $16.16
    Was: $17.95
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  • On Sale
    New - H&K 21E/23E/11E/13E Hammer Spring - HKP-15453
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    HK21E, HK23E, HK11E, HK13E Hammer Spring

    H&K Heckler & Koch

    Now: $17.95
    Was: $19.95
    HK German HK21E, 23E, 11E & 13E Hammer Spring - German This is the heaviest HK hammer spring available for the roller lock family of firearms. The factory correct hammer spring for the beltfed series of firearms. Made in Germany and production has...
    Now: $17.95
    Was: $19.95
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    Was: $19.95
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  • On Sale
    New - H&K HK G36 Bayonet Roll Pin - HKP-16389
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    HK G36 Bayonet Roll Pin

    H&K Heckler & Koch

    Now: $8.05
    Was: $8.95
    HK G36 Bayonet Roll Pin
    Now: $8.05
    Was: $8.95
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    Now: $8.05
    Was: $8.95
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  • On Sale
    New - H&K VP9, VP40 Grip Panel Left Side - Medium - Black - HKP-16806 HK VP9, VP40 Grip Panel Left Side - Medium - Black
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    HK VP9, VP40 Grip Panel Left Side - Medium - Black

    H&K Heckler & Koch

    Now: $16.16
    Was: $17.95
    H&K VP9, VP40 Grip Panel Left Side - Medium - Black New HK German manufactured. Left side medium size perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. Compatible With: HK VP9 HK VP40 HK VP9A1 F HK VP9A1 K
    Now: $16.16
    Was: $17.95
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    Now: $16.16
    Was: $17.95
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  • On Sale
    New - H&K MP5 40/10 Magazine Release Lever Spring - HKP-18109 HK MP5 Magazine Release Lever Spring - 10mm and .40 S&W
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    HK MP5 Magazine Release Lever Spring - 10mm and .40 S&W

    H&K Heckler & Koch

    Now: $8.96
    Was: $9.95
    H&K MP5 40/10 Magazine Release Lever Spring The needed spring that fits in the mag release lever and the magwell for the MP5 40/10 series. Made in Germany and no longer offered or made. These units are the latest design with the ground ends for...
    Now: $8.96
    Was: $9.95
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  • On Sale
    New - PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw - HKP-16743
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    HK MP5, MP5K, HK93, HK91 Handguard Retainer Screw - Tactical, Keymod, and M-LOK

    PTR

    Now: $4.46
    Was: $4.95
    PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw This is the screw that is used on all the Tactical, Keymod, and M-LOK forearms (MP5K, MP5, HK93, HK91). A great spare to have in case the original screw gets lost.
    Now: $4.46
    Was: $4.95
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  • On Sale
    New - H&K HK Pistol Trigger Axle - HKP-01806
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    HK Pistol Trigger Axle

    H&K Heckler & Koch

    Now: $8.96
    Was: $9.95
    HK Pistol Trigger Axle Compatible With: HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK P30 HK P30L HK P30SK HK P2000 HK P2000SK HK45 HK45 Compact
    Now: $8.96
    Was: $9.95
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  • Out Of Stock
    On Sale
    New - H&K HK USP/USPC/45 Series Complete Sear - Black - HKP-01173 HK45 Series,  USP, USP Compact Series Complete Sear

    HK45 Series, USP, USP Compact Series Complete Sear

    H&K Heckler & Koch

    Now: $39.56
    Was: $43.95
    Complete Sear Compatible With: HK USP Full-Size 9mm, .40 & 45 HK USP Compact 9mm, .40 & 45 HK45, HK45 Tactical HK45C, HK45C Tactical
    Now: $39.56
    Was: $43.95
    Out Of Stock
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    Now: $39.56
    Was: $43.95
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