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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  • On Sale
    Used - MP5K PDW German Parts Kit - 4 Position Trigger Group - HKP-20759
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    HK MP5K-PDW German Parts Kit - 4 Position Trigger Group

    H&K Heckler & Koch

    Now: $5,759.95
    Was: $7,199.95
    HK MP5K-PDW German Parts Kit: Rare and ultra desirable MP5K-PDW parts kit. In good to like new condition with a factory marked HK folding stock and the ultra desirable 4 position 0, 1 , 3 , F  burst trigger group , 3-lug threaded barrel (1/2 x 32...
    HKP-20759
    Now: $5,759.95
    Was: $7,199.95
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    Now: $5,759.95
    Was: $7,199.95
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  • New - H&K HK MP5 40 & MP5 10mm Factory F/A Bolt Carrier - HKP-19390 HK MP5 Bolt Carrier - Full Auto - .40 S&W, 10mm - Tungsten
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    HK MP5 Bolt Carrier - Full Auto - .40 S&W, 10mm - Tungsten

    H&K Heckler & Koch

    $449.95
    New HK German MP5 40/10 Factory F/A Bolt Carrier This is the latest and greatest version of the MP5 40 and MP5 10mm carrier. No longer in production or manufactured. Tungsten filled German HK and the real deal.  
    HKP-19390
    $449.95
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    $449.95
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  • Out Of Stock
    New - HK G36E Barrel - HKP-19273 HK G36E Barrel - 5.56 / .223 - 19"

    HK G36E Barrel - 5.56 / .223 - 19"

    USA

    $499.95
    Barrel - USA - HK G36E Brand new HK G36E barrel. Specifications: Barrel length 19"
    HKP-19273
    $499.95
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    $499.95
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  • Out Of Stock
    Used - H&K HK MP5K Gun Briefcase - HKP-19207 Used - H&K HK MP5K Gun Briefcase - HKP-19207

    HK MP5K Gun Briefcase

    H&K Heckler & Koch

    $0.00
    H&K HK MP5K Gun Briefcase Compatible With: MP5K Can be adapted for use with custom builds and other MP5K variants Specifications: Dimensions: 20 in/15 in/ 5 in Condition: New Origin: Germany
    HKP-19207
    $0.00
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  • Out Of Stock
    New - H&K HK 93, HK 33, HK 53, Z43 A2 Fixed Stock - Green - HKP-17965 HK33, HK53, HK93, Z43 A2 Fixed Stock - Green

    HK33, HK53, HK93, Z43 A2 Fixed Stock - Green

    H&K Heckler & Koch

    $0.00
    HK MKE/Zenith HK93,33,53 & Z43 - Fixed Stock - Green
    HKP-17965
    $0.00
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  • Out Of Stock
    New - H&K HK 93, HK 53, HK 33 Fixed Stock - Green - HKP-00473 HK33, HK53, HK93 A2 Fixed Buttstock - Green

    HK33, HK53, HK93 A2 Fixed Buttstock - Green

    H&K Heckler & Koch

    $0.00
    HK Heckler and Koch HK33, HK53, HK93 Fixed Stock - Green This stock will fit all HK .223 rifles and clones that are made to factory spec. Compatible with: HK33, HK53, HK93 Zenith Z43 This is the current production model with the improved buffer. This...
    HKP-00473
    $0.00
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  • Out Of Stock
    New - H&K HK 93, HK 53, HK 33K, HK 33 #15 Locking Piece - HKP-00480 HK33, HK53, HK93, HK33K Locking Piece #15 - 65 Degree

    HK33, HK53, HK93, HK33K Locking Piece #15 - 65 Degree

    H&K Heckler & Koch

    $0.00
    Heckler and Koch #15 Locking Piece for HK33, HK53, HK33K, HK 93  The German HK 65 degree angled locking piece was standard on the early HK53 rifles. This locking piece is also used for some custom HK build applications. Also, a great idea to keep a...
    HKP-00480
    $0.00
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  • Out Of Stock
    New - TBR HK MP5 Top Mount Brass Catcher for MFI Rails - Black - HKP-19147 HK MP5 Brass Catcher - Top Mount

    HK MP5 Brass Catcher - Top Mount

    TBR Tactical Brass Recovery

    $219.95
    TBR HK MP5 Top Mount Brass Catcher for MFI Rails MP5 model for MFI rail equipped guns.
    HKP-19147
    $219.95
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    $219.95
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  • Out Of Stock
    New - TBR HK MP5 Top Mount Brass Catcher for MFI Rails - FDE - HKP-19148 HK MP5 Brass Catcher - Top Mount - FDE

    HK MP5 Brass Catcher - Top Mount - FDE

    TBR Tactical Brass Recovery

    $219.95
    TBR HK MP5 Top Mount Brass Catcher for MFI Rails - FDE MP5 model for MFI rail equipped guns.
    HKP-19148
    $219.95
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    $219.95
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  • On Sale
    New - H&K Hensoldt 90 Series Aiming Projector - Black - HKP-19119 HK MP5, G3, HK33 Hensoldt Aiming Projector - RARE
    Add to Cart

    HK MP5, G3, HK33 Hensoldt Aiming Projector - RARE

    H&K Heckler & Koch

    Now: $4,788.95
    Was: $7,999.95
    H&K Hensoldt 90 Series Aiming Projector Ultra rare Heckler & Koch Hensoldt Aiming Point Projector. Includes the original wooden case with all accessories, including IR lens, lens cleaning brush, spare bulbs, tweezers, cleaning cloth, etc.  A...
    HKP-19119
    Now: $4,788.95
    Was: $7,999.95
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    Now: $4,788.95
    Was: $7,999.95
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  • New - H&K HK MP5 40 2 Position Navy Semi Only Clipped & Pinned Trigger Group - HKP-01752
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    HK MP5 Trigger Group - Navy 2 Position - Semi Only - .40 S&W - Clipped and Pinned

    H&K Heckler & Koch

    $769.95
    HK Heckler and Koch .40 S&W 2 Position Navy Semi Clipped and Pinned Trigger Group for HK MP5
    HKP-01752
    $769.95
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    Qty in Cart: 0
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    $769.95
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  • Out Of Stock
    New - HK USC, HK UMP Front Sight - Black - HKP-19124 HK USC, UMP Front Sight

    HK USC, UMP Front Sight

    USA

    $11.95
    Front Sight - HK USC, UMP - USA Easy to swap out. Knock out the roll pin, remove, replace, and then re-insert the roll pin. Common wear or breakage part. Compatible With: All models of USC and UMP's
    HKP-19124
    $11.95
    Out Of Stock
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    $11.95
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