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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  • Out Of Stock
    On Sale
    New - HKP HK 91/G3/PSG1/HK11 50 Round Drum Magazine - HKP-21615 HK91, G3, PSG1, HK11 Drum Magazine - 50 Round

    HK91, G3, PSG1, HK11 Drum Magazine - 50 Round

    HKP HK Parts

    Now: $323.95
    Was: $359.95
    HKP 50 Round Drum HK91, G3, PSG1/MSG90, HK11 - 7.62x51/.308 Modeled after the discontinued HK G8 50 round drum, the HK Parts drum steps in where the original left off.  Each drum is crafted in the US from billet aluminum with aluminum and steel...
    HKP-21615
    Now: $323.95
    Was: $359.95
    Out Of Stock
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    Now: $323.95
    Was: $359.95
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  • On Sale
    New - SB Tactical, B&T HK MP5/SP5 Folding Brace - HKP-19353 HK MP5, SP5 Folding Brace
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    HK MP5, SP5 Folding Brace

    B&T Brugger & Thomet / SB Tactical

    Now: $237.95
    Was: $279.95
    B&T MP5/SP5 Folding Brace - Swiss/US Factory Swiss B&T MP5, SP5 Folding Pistol Brace with the SB Tactical/B&T components assembled. A rare offering using the B&T Swiss manufactured folding polymer end cap with sling swivel slightly used...
    HKP-19353
    Now: $237.95
    Was: $279.95
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    Now: $237.95
    Was: $279.95
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  • New - H&K HK VP9, HK VP9L Optics Plate #4 DeltaPoint Pro & Eotech EFLX - Black - HKP-19255 HK VP9 Optic Plate #4 - Leupold DeltaPoint Pro, Eotech EFLX - Red Dot Pistol Mount
    Add to Cart

    HK VP9 Optic Plate #4 - Leupold DeltaPoint Pro, Eotech EFLX - Red Dot Pistol Mount

    H&K Heckler & Koch

    $48.95
    Optics Plate #4 Leupold DeltaPoint Pro & Eotech EFLX - HK VP9, VP9L New HK German OEM manufacture steel optics plate Compatible With: HK VP9 OR, VP9 Tactical OR HK VP9L OR HK VP9 Match OR HK VP9SK OR HK VP9A1 K HK VP9A1 F **Plate only works with...
    HKP-19255
    $48.95
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    Qty in Cart: 0
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    $48.95
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  • On Sale
    New - Choate MP5 Replacement Buffer For Folding Stock Or End Cap - HKP-00116
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    HK MP5 Replacement Buffer For Folding Stock Or End Cap

    Choate

    Now: $2.95
    Was: $3.95
    Choate MP5 Replacement Buffer For Folding Stock Or End Cap   Compatible With: Choate MP5 and MP5K Stocks or End Caps (NOT compatible with MP5 .22 LR)
    HKP-00116
    Now: $2.95
    Was: $3.95
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    Now: $2.95
    Was: $3.95
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  • New - HK Piston 3-Ring Replacement Set - HKP-00048
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    HK416, MR556, G36, SL8 Piston Ring - Replacement Set of 3

    H&K Heckler & Koch

    $19.95
    HKP Gas Piston Ring Replacement Combo Set- 3 Rings The gas rings are prone to periodic breakage and wear and tear and require them to be replaced periodically. These are some of the most common breakage parts we see that need to be replaced on these...
    HKP-00048
    $19.95
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    Qty in Cart: 0
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    $19.95
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  • New - H&K HK MR556/MR762/416 Buffer Retainer Pin - HKP-12704
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    HK416, MR556, MR762 Buffer Retainer Pin

    H&K Heckler & Koch

    $3.95
    Heckler and Koch HK416, HK MR556, HK MR762 Buffer Retainer Pin Compatible With: HK416, MR556 HK MR762
    HKP-12704
    $3.95
    Add to Cart
    Qty in Cart: 0
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    $3.95
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  • New - H&K GSG-5 Rear Sight - HKP-02401 HK GSG-5 Rear Sight
    Add to Cart

    HK GSG-5 Rear Sight

    H&K Heckler & Koch

    $18.95
    H&K GSG-5 Rear Sight This item will fit all GSG-5 models, including the PK and P models. This item is an all-steel HK-made part designed for combat and the toughest of environments. Each HK factory sight comes as shown and is...
    HKP-02401
    $18.95
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    Qty in Cart: 0
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    $18.95
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  • On Sale
    HK91, G3, HK33, HK93 Bayonet Adapter - Complete - Turkish Contract HK91, G3, HK33, HK93 Bayonet Adapter - Complete - Turkish Contract
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    HK91, G3, HK33, HK93 Bayonet Adapter - Complete - Turkish Contract

    Other

    Now: $34.95
    Was: $38.95
    Turkish Contract Complete Bayonet Adapter for HK91, HK G3, HK33, HK93 Complete Turkish contract 90 Series-style steel bayonet adapter supplied with the required mounting hardware. Designed for proper fit on HK33, HK93, HK91, and G3 pattern rifles...
    HKP-22517
    Now: $34.95
    Was: $38.95
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    Now: $34.95
    Was: $38.95
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  • On Sale
    New - HKP HK MP5 Aimpoint ACRO Sight -Raised Height - HKP-21484-M HK MP5, SP5K, HK33, HK53, HK93 Optic Mount - Raised - Aimpoint ACRO
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    HK MP5, SP5K, HK33, HK53, HK93 Optic Mount - Raised - Aimpoint ACRO

    HKP HK Parts

    Now: $95.95
    Was: $119.95
    HKP - HK MP5 Optic Mount - ACRO - Raised HK Parts brings you one of the most requested optic mounts for the MP5/MP5K platform. A raised design with a direct Aimpoint ACRO mounting interface. Our ACRO mounts provide an unobstructed view of the factory HK...
    HKP-21484-M
    Now: $95.95
    Was: $119.95
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    Now: $95.95
    Was: $119.95
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  • On Sale
    New - HKP HK VP9 Gen 2 V1 Threaded Barrel Rail Mount Compensator - Black - HKP-19115 HK VP9 Gen 2 V1 Threaded Barrel Rail Mount Compensator
    Add to Cart

    HK VP9 Gen 2 V1 Threaded Barrel Rail Mount Compensator

    HKP HK Parts

    Now: $99.95
    Was: $169.95
    HKP HK VP9 Gen 2 V1 Threaded Barrel Rail Mount Compensator Made specifically for the VP9 Tactical or VP9 with Threaded barrel - Version 1 - Gen 2  This HK Parts VP9 Threaded Barrel Rail Mount Compensator is the perfect accessory for your firearm...
    HKP-19115
    Now: $99.95
    Was: $169.95
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    Qty in Cart: 0
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    Now: $99.95
    Was: $169.95
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  • On Sale
    New - HKP HK 21 (7.62x51/.308) Extended Style Cocking Handle - HKP-00363 HK21 Cocking Handle - Extended Style
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    HK21 Cocking Handle - Extended Style

    HKP HK Parts

    Now: $55.95
    Was: $69.95
    HK Extended Cocking Handle - HK21 Rubberized extended cocking handles for the older style HK21 firearms. This extended cocking handle makes a HUGE difference when trying to charge the HK21 firearm, as it has increased spring pressure and can be a pain to...
    HKP-00363
    Now: $55.95
    Was: $69.95
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    Now: $55.95
    Was: $69.95
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  • New - H&K HK P Series LEM Elbow Spring - HKP-02498
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    HK P Series LEM Elbow Spring

    H&K Heckler & Koch

    $6.95
    HK P Series LEM Elbow Spring Compatible With All LEM Models Below: HK P30 HK P30L HK P30SK HK P2000 HK P2000SK
    HKP-02498
    $6.95
    Add to Cart
    Qty in Cart: 0
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    $6.95
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