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 - HKP MP5 F & MP5 40,10 Recoil Rod Assembly - HKP-17833 HK MP5, MP5F Recoil Rod Assembly
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    HK MP5, MP5F Recoil Rod Assembly

    HKP HK Parts

    $49.95
    MP5 F, MP5 40/10 Recoil Spring Rod Assembly Complete - Extra Power This is the correct MP5F or MP5 40/10 Recoil Rod assembly with the proper parts and size. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for...
    HKP-17833
    $49.95
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  • New - H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring - HKP-16835
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    HK VP9, VP9SK, VP40 Elbow Spring, Drop Safety

    H&K Heckler & Koch

    $6.95
    H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16835
    $6.95
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    $6.95
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  • Used - HK German -2 Locking Roller Standard 7.98mm - Used - HKP-20600 HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used
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    HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used

    H&K Heckler & Koch

    $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...
    HKP-20600
    $9.95
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  • Out Of Stock
    New - H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring - HKP-01866

    HK G36, UMP 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.  
    HKP-01866
    $8.95
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    $8.95
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  • New - 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
    Heckler and Koch High Capacity Magazine Locking Plate for HK USP 9mm and .40 S&W  Compatible With: USP9 USP40
    HKP-02165
    $6.95
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  • New - H&K HK VP9/VP9SK, VP40 Left Side Slide Release Lever - Black - HKP-16787 HK VP9, VP9SK, VP40 Left Side Slide Release Lever
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    HK VP9, VP9SK, VP40 Left Side Slide Release Lever

    H&K Heckler & Koch

    $19.95
    H&K HK VP9/VP9SK, VP40 Left Side Slide Release Lever - Black New HK VP series German left side slide release lever for slide. Compatible With: HK VP9, VP9L HK VP9SK HK VP9A1 F HK VP9A1 K HK VP40
    HKP-16787
    $19.95
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  • New - H&K HK P7M8/P7M13 Detent, Piston - HKP-16327
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    HK P7M8, P7M13 Detent - Gas Piston

    H&K Heckler & Koch

    $9.95
    H&K HK P7M8/P7M13 Detent, Piston Compatible With: P7M8 P7M13
    HKP-16327
    $9.95
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  • New - HKP Elbow Spring Spacer For Semi-Auto - HKP-18210 HK MP5, HK90 Series Bushing Sleeve for Elbow Spring - Semi Auto
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    HK MP5, HK90 Series Bushing Sleeve for Elbow Spring - Semi Auto

    HKP HK Parts

    $8.95
    HK Parts Distance Sleeve replacement for your elbow spring in your Semi-Auto MP5  New USA manufacture. Semi auto spacer for elbow spring on the HK 90 series trigger packs. Micro polished and made from stainless steel. This is the finest semi auto...
    HKP-18210
    $8.95
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  • New - H&K SP5K, MP5K Reverse Stretch Cocking Tube Support Spring - HKP-17873
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    HK SP5K, MP5K Cocking Tube Support Spring - Reverse Stretch

    H&K Heckler & Koch

    $6.95
    Heckler and Koch HK SP5K, MP5K Reverse Stretch Cocking Tube Support Spring A great spare to have on hand as this part can become worn and be lost. The cocking tube support spring applies pressure to the cocking tube detent to enable to the detent to lock...
    HKP-17873
    $6.95
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  • HK Mark 23, SOCOM Firing Pin - Titanium HK Mark 23, SOCOM Firing Pin - Titanium
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    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...
    HKP-17803
    $49.95
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  • Out Of Stock
    New - H&K HK416, MR556 Magazine Release Button - HKP-02656 HK416, MR556 Magazine Release Button

    HK416, MR556 Magazine Release Button

    H&K Heckler & Koch

    $16.95
    Heckler and Koch Magazine Release Button for HK416 and HK MR556 New HK German Manufacture. Compatible With: HK416, MR556 AR15, M4, M16 firearms
    HKP-02656
    $16.95
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    $16.95
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  • New - PTR Tactical Handguard "U" Shaped Bracket Screw - HKP-17318 HK MP5, MP5K, HK93, HK91 Handguard Bracket Screw - Tactical
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    HK MP5, MP5K, HK93, HK91 Handguard Bracket Screw - Tactical

    PTR

    $1.95
    PTR Tactical Handguard "U" Shaped Bracket Screw Replacement screw for the "U" shaped hangar on the tactical handguard. There are a total of 3 screws used, they are all the same for the MP5k, MP5, HK93 & HK91 tactical handguards. Great spare to have...
    HKP-17318
    $1.95
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    $1.95
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