Parts

Parts

At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.

Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.

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  • New - RCM HK53 .300 BLK Barrel - Threaded 5/8x24 - HKP-13907 HK53 Barrel - .300 BLK - 8.20" - Threaded 5/8x24
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    HK53 Barrel - .300 BLK - 8.20" - Threaded 5/8x24

    RCM

    $239.95
    RCM HK53 .300 BLK Barrel - Threaded 5/8x24 Each barrel was designed for use with the wildly popular AAC style quick detach muzzle breaks and suppressors with the 5/8x24 thread pitch. Although, this barrel is perfect for just about any .300 BLK suppressor...
    HKP-13907
    $239.95
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  • New - X Products HK 93/53/33 (5.56/.223) 50 Round Drum Magazine - HKP-17812 HK33, HK53, HK93 Drum Magazine - 50 Round
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    HK33, HK53, HK93 Drum Magazine - 50 Round

    X Products

    $349.95
    50 Round Drum HK 93, 33, 53 & Clones, Custom Builds - X93, 33, 53 X Products 50 round drum for the HK93, 33, 53 family of firearms. Will fit all in-spec firearms made to German HK magwell specs.  Each drum in this limited run was crafted from...
    HKP-17812
    $349.95
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  • HK MP5, MP5K Optic Mount - Raised - Aimpoint ACRO, T1, T2 - Picatinny HK MP5, MP5K Optic Mount - Raised - Aimpoint ACRO, T1, T2 - Picatinny
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    HK MP5, MP5K Optic Mount - Raised - Aimpoint ACRO, T1, T2 - Picatinny

    MI Midwest Industries

    $104.95
    Midwest Industries HK MP5, MP5K Tall Optic Mount Tall, clamp-on optic mount for HK MP5 and MP5K pattern firearms, giving a higher, more upright sightline while still allowing use of the factory diopter sights. Ideal for mounting micro red dots with a...
    HKP-22396-M
    $104.95
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  • New - HKP Torx Binary Upgrade Screw Set - HKP-21816
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    HK Torx Screw Set for Binary Selector Lever - Upgrade

    HKP HK Parts

    $2.95
    HKP Torx Binary Upgrade Screw Set Upgrade your binary selector levers with our Torx hardware set.  Torx hardware is less likely to strip than standard allen key hardware.  Good spares to have on hand as well. Note: Each set comes with 2 screws.
    HKP-21816
    $2.95
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    $2.95
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  • New - HKP HK VP9SK MOD 1 Compensator - Black - HKP-21796 HK VP9SK MOD 1 Compensator
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    HK VP9SK MOD 1 Compensator

    HKP HK Parts

    $179.95
    HK Parts MOD 1 Compensator: H&K VP9SK The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a significant reduction in muzzle flip and recoil, allowing you to get back on target faster...
    HKP-21796
    $179.95
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  • New - HKP HK21/FMP21 Teardrop Rail Set - HKP-21671 HK21, FMP21 Teardrop Rail Set - T-Rail
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    HK21, FMP21 Teardrop Rail Set - T-Rail

    HKP HK Parts

    $197.95
    HKP HK21/FMP21 Teardrop Rail Set HK teardrop style reinforcement rails. The ultimate choice for period correct builds. Expertly crafted in the USA from high-quality 4140 steel, these ready-to-weld rails are engineered for precision and durability...
    HKP-21671
    $197.95
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  • New - JMAC Universal M-LOK Skeleton Forward Grip - HKP-21240 M-LOK Foregrip - Skeleton
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    M-LOK Foregrip - Skeleton

    JMAC Customs

    $89.95
    JMAC Universal M-LOK Skeleton Forward Grip  Can be used as a forward grip or a handstop! Features: Reversible and Lightweight M-LOK Compatible (Requires 2 slots) Fits in and across M-LOK Slots Includes mounting hardware 7075 T6 Aluminum Hard Coat...
    HKP-21240
    $89.95
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  • On Sale
    New - HKP HK VP9 Comp Weight™ Compensator - Quick Detach - Steel - HKP-18154 HK VP9, VP40 Compensator - Quick Detach - Steel
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    HK VP9, VP40 Compensator - Quick Detach - Steel

    HKP HK Parts

    Now: $99.95
    Was: $199.95
    HK Parts HK VP9 Comp Weight™ Compensator - Quick Detach - Steel Easy on, easy off - Quick Detach technology. Doubles as a compensator as it directs pressure down on the frame to reduce recoil, and increases accuracy with less muzzle flip...
    HKP-18154
    Now: $99.95
    Was: $199.95
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  • On Sale
    New - HKP HK VP9 Railok™ Threaded Barrel Compensator - HKP-21163 HK VP9 Railok™ Threaded Barrel Compensator
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    HK VP9 Railok™ Threaded Barrel Compensator

    HKP HK Parts

    Now: $129.95
    Was: $189.95
    HK Parts Railok™ Mounting System Compensator for Threaded Barrel: H&K VP9 The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function. Users will immediately notice the reduction in muzzle flip...
    HKP-21163
    Now: $129.95
    Was: $189.95
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  • New - Comp-Tac HK VP9L Lever + Compensator + Align Tactical Holster – Right Hand - HKP-20979 HK VP9L Tactical Holster, Lever, and Compensator  – RH
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    HK VP9L Tactical Holster, Lever, and Compensator – RH

    Comp-Tac

    $89.95
    Comp-Tac HK VP9L Lever + Compensator + Align Tactical Holster – Right Hand This custom made Comp-Tac International OWB holster is for your HK VP9L pistol and it that allows you to have the align tactical takedown lever & our HK parts...
    HKP-20979
    $89.95
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  • New - Comp-Tac HK VP9 Lever + Compensator + Align Tactical Holster – Right Hand - HKP-20978 HK VP9 Tactical  Holster, Lever,  and Compensator - RH
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    HK VP9 Tactical Holster, Lever, and Compensator - RH

    Comp-Tac

    $89.95
    Comp-Tac HK VP9 Lever + Compensator + Align Tactical Holster – Right Hand This custom made Comp-Tac International OWB holster is for your HK VP9L pistol and it that allows you to have the align tactical takedown lever & our HK parts compensator...
    HKP-20978
    $89.95
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  • New - HKP HK MP5K Ace Style Stock - HKP-20953 HK MP5K Ace Style Stock
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    HK MP5K Ace Style Stock

    HKP HK Parts

    $164.95
    HKP HK MP5K Ace Style Stock MP5K billet ace adapter paired with an all-steel ace-style stock. 
    HKP-20953
    $164.95
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    $164.95
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