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 HK MR556/MR762/416/417 Disconnector Spring - Short - HKP-02675

    HK416, HK417, MR556, MR762 Disconnector Spring - Short

    H&K Heckler & Koch

    $4.95
    H&K HK MR556/MR762/416/417 Disconnector Spring - Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: HK MR556 HK 416 HK MR762 HK 417
    HKP-02675
    $4.95
    Out Of Stock
    Qty in Cart: 0
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    $4.95
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  • Out Of Stock
    New - H&K -2 Roller For Bolt Head 7.98mm - Under-sized - HKP-00505 HK -2 Roller For Bolt Head 7.98mm - Under-sized

    HK -2 Roller For Bolt Head 7.98mm - Under-sized

    H&K Heckler & Koch

    $19.95
    H&K -2 Roller For Bolt Head 7.98mm - Under-sized The proper roller size is essential for proper head spacing and bolt gap. New HK German not surplus or used goods. German-made -2 roller. Please Note: The price listed is per roller. Order 2 (pair) for...
    HKP-00505
    $19.95
    Out Of Stock
    Qty in Cart: 0
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    $19.95
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  • New - H&K MR556/MR762 A4 Safety Lever - Right - HKP-21966 HK MR556, MR762 A4 Safety Lever - Right
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    HK MR556, MR762 A4 Safety Lever - Right

    H&K Heckler & Koch

    $13.95
    H&K MR556/MR762 A4 Safety Lever - Right H&K factory right-side selector lever for MR-series ambidextrous safety systems.  Compatible With: HK MR762 A1/A4 HK MR556 A1/A4
    HKP-21966
    $13.95
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  • New - H&K HK MR556/416 Forward Assist Plunger Pin - HKP-17542
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    HK416, MR556 Forward Assist Plunger Pin

    H&K Heckler & Koch

    $9.95
    H&K HK MR556/416 Forward Assist Plunger Pin  
    HKP-17542
    $9.95
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  • New - H&K HK MR556/416 Roll Pin for Charging Handle - HKP-17063
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    HK 416, MR556 Charging Handle Roll Pin

    H&K Heckler & Koch

    $7.95
    HK Clamping Sleeve or Roll Pin for Pawl On Charging Handle This is the longer one that is used on the outside of the charging handle. There are one of these pins used per charging handle.
    HKP-17063
    $7.95
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  • New - HKP HK MP5 40 Locking Roller -4 - HKP-17561
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    HKP HK MP5 40 Locking Roller -4

    HKP HK Parts

    $11.95
    HK US MP540 Undersized Locking Roller, -4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...
    HKP-17561
    $11.95
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    $11.95
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  • New - HKP MP5 40/10 Magazine Release Paddle Lever - HKP-01274 HK MP5 Magazine Release Paddle Lever - 10mm / .40 S&W
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    HK MP5 Magazine Release Paddle Lever - 10mm / .40 S&W

    HKP HK Parts

    $59.95
    HK MP5 40 & MP5 10mm - Magazine Release Lever   
    HKP-01274
    $59.95
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    $59.95
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  • New - H&K MP5F & MP5 40,10 Cocking Support Handle Spring - HKP-00426
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    HK MP5F, MP5 Compression Spring - Cocking Lever Support - 10mm / .40 S&W

    H&K Heckler & Koch

    $9.95
    H&K MP5F & MP5 40,10 Cocking Support Handle Spring One of these springs is required for use with the cocking handle/support assembly. You need the following - MP5 40 cocking tube support, MP5 40 cocking handle, and the cocking handle spring to...
    HKP-00426
    $9.95
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  • New - H&K VP9, VP40 Grip Panel Right Side - Large - Black - HKP-16812 HK VP9, VP40 Grip Panel Right Side - Large - Black
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    HK VP9, VP40 Grip Panel Right Side - Large - Black

    H&K Heckler & Koch

    $19.95
    H&K VP9, VP40 Grip Panel Right Side - Large - 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
    HKP-16812
    $19.95
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  • New - HKP HK MP5 40 Locking Roller +4 - HKP-17562
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    HKP HK MP5 40 Locking Roller +4

    HKP HK Parts

    $11.95
    HK US MP540 Undersized Locking Roller, +4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...
    HKP-17562
    $11.95
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    $11.95
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  • On Sale
    New - HK G36/SL8 Extractor - HKP-18882 HK G36, SL8 Extractor
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    HK G36, SL8 Extractor

    USA

    Now: $39.95
    Was: $67.95
    G36 & HK SL8 Extractor For Bolt Head Compatible With: All G36 variants SL8-1, SL8-6
    HKP-18882
    Now: $39.95
    Was: $67.95
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    Now: $39.95
    Was: $67.95
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  • New - H&K G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring - HKP-01858
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    HK MP7, G36 Bolt O-Ring - Firing Pin

    H&K Heckler & Koch

    $9.95
    HK G36 & MP7 Firing Pin - Bolt O-Ring   Compatible With: HK G36 HK MP7  
    HKP-01858
    $9.95
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    $9.95
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