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 - GSG9 HK SL8, HK G36 Magazine Release Axle Pin - HKP-18255 HK SL8, G36 Magazine Release Axle Pin

    HK SL8, G36 Magazine Release Axle Pin

    GSG9

    $10.95
    GSG9 Magazine Release Axle - USA made for HK G36 and HK SL8 Mag release axle for all G36 and SL8 models. A must-have spare part. Made in the USA. Compatible With: G36 G36K SL8 Other custom G36 type builds
    HKP-18255
    $10.95
    Qty in Cart: 0
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  • New - HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut - HKP-20315 HK MP5, HK90 Series Pinned Hammer Strut

    HK MP5, HK90 Series Pinned Hammer Strut

    HKP HK Parts

    $13.95
    HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut New USA hammer strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: HK trigger...
    HKP-20315
    $13.95
    Qty in Cart: 0
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  • Out Of Stock
    New - H&K HK MR556 Front Lower Receiver Locking Pin - HKP-02663 HK416, MR556 Takedown Pin - Front - A1 Style

    HK416, MR556 Takedown Pin - Front - A1 Style

    H&K Heckler & Koch

    $64.95
    H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...
    HKP-02663
    $64.95
    Qty in Cart: 0
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  • New - H&K HK MR556/416 Firing Pin - HKP-00045

    HK416, MR556 Firing Pin

    H&K Heckler & Koch

    $54.95
    Heckler and Koch HK MR556/416 Firing Pin   New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems.   Compatible With: HK MR556 HK 416 HK...
    HKP-00045
    $54.95
    Qty in Cart: 0
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  • New - H&K HK VP9SK/P30SK/P2000SK 9mm Magazine Locking Plate - HKP-16650 HK VP9SK, P30SK, P2000SK Magazine Locking Plate - 9mm

    HK VP9SK, P30SK, P2000SK Magazine Locking Plate - 9mm

    H&K Heckler & Koch

    $8.95
    HK P2000SK, VP9SK & P30SK 9mm 10 Round Magazine Locking Plate For Magazine Works with the P2000SK, VP9SK and P30SK sub compact (SK) magazine models only. Compatible With: HK P30 SK HK P2000 SK HK VP9SK
    HKP-16650
    $8.95
    Qty in Cart: 0
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  • New - H&K Grip Screw - HKP-01725

    HK MP5, SP89, HK91, HK93, HK94 Grip Screw

    H&K Heckler & Koch

    $8.95
    H&K Grip Screw New HK grip screw that is now out of production. Great for a spare. Compatible With: HK91 HK93 HK94 SP89
    HKP-01725
    $8.95
    Qty in Cart: 0
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  • New - H&K HK VP9/VP9SK, VP40 Trigger Stop Bolt - HKP-16784

    HK VP9, VP9SK, VP40 Trigger Stop Bolt

    H&K Heckler & Koch

    $14.95
    H&K HK VP9/VP9SK, VP40 Trigger Stop Bolt Stop Bolt for Trigger VP9, VP40. Compatible With: HK VP9 HK VP9SK HK VP40 HK VP9A1 F HK VP9A1 K
    HKP-16784
    $14.95
    Qty in Cart: 0
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  • New - H&K VP9/VP9SK, VP40 Catch Pressure Spring - HKP-16800

    HK VP9, VP9SK, VP40 Sear Spring

    H&K Heckler & Koch

    $5.95
    H&K VP9/VP9SK, VP40 Catch Pressure Spring Compatible With: HK VP9 HK VP9SK HK VP9A1 F, VP9A1 K HK VP40
    HKP-16800
    $5.95
    Qty in Cart: 0
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  • New - H&K HK G36/SL8/MP7 Gas Block Pin - HKP-16727

    HK MP7, G36, SL8 Gas Block Pin

    H&K Heckler & Koch

    $8.95
    H&K HK G36/SL8/MP7 Gas Block Pin The G36/SL8/MP7 gas block pin is the largest out of HK's line up (UMP/USC, 415/MR556, 417/MR762).
    HKP-16727
    $8.95
    Qty in Cart: 0
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever - HKP-01884 HK UMP, USC Cocking Lever

    HK UMP, USC Cocking Lever

    H&K Heckler & Koch

    $24.95
    HK UMP & USC Cocking Lever New HK German part. Compatible With: HK UMP HK USC
    HKP-01884
    $24.95
    Qty in Cart: 0
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  • New - HKP HK 416 Ejection Port Axle - HKP-20039

    HK416 Ejection Port Axle

    H&K Heckler & Koch

    $4.95
    Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver. 
    HKP-20039
    $4.95
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  • New - H&K CC9 Backstrap Roll Pin - HKP-22110

    HK CC9 Backstrap Roll Pin

    H&K Heckler & Koch

    $5.95
    H&K CC9 Backstrap Roll Pin   This genuine H&K backstrap roll pin for CC9 pistol secures the interchangeable backstrap to the frame.   Compatible With: HK CC9  
    HKP-22110
    $5.95
    Qty in Cart: 0
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