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
    New - HKP HK G36C Barrel Front End Kit - HKP-18228 8.9" barrel threaded 15x1, G36C forearm with heat shield, hand stop and sling loops, 4-prong flash hider with retaining ring, gas piston with piston rings installed, piston rod and spring assembly complete, gas block piston assembly, barrel nut

    HK G36C Barrel Conversion and Front End Kit - 5.56 / .223 - 8.9" - Threaded 15x1

    HKP HK Parts

    $889.95
    G36C Barrel Front End Barrel Kit - 223/556 New production HK G36C style barrel conversion kit and front end kit. Each kit will include the necessary parts to build a G38/SL8 variant into the G36KC barrel length variant as pictured. All you need is this...
    HKP-18228
    $889.95
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  • New - PTR HK 91/G3 (7.62x51/.308) Trigger Group - 5 U.S. 922 Parts - HKP-02643 HK91, G3 Trigger Group - 5 U.S. 922 Parts
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    HK91, G3 Trigger Group - 5 U.S. 922 Parts

    PTR

    $369.95
    HK 91, G3, & PTR91 Semi Auto Trigger Group Complete This lower is ready to drop on your semi-auto HK firearm. It comes complete with the US-made parts already installed. The remaining parts are all German HK parts to make up the rest of the trigger...
    HKP-02643
    $369.95
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  • Used - H&K 93/53/33 (5.56/.223) Surplus Fixed Stock - A2 - Jungle Green - HKP-18887 HK33, HK53, HK93 A2 Fixed Buttstock - Surplus - Jungle Green
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    HK33, HK53, HK93 A2 Fixed Buttstock - Surplus - Jungle Green

    H&K Heckler & Koch

    $122.95
    Surplus - Fixed Stock - Jungle Green - HK93,33,53 Hand-picked stocks in excellent condition. Comes with matching buttpad. Ready to install on your HK or clone rifle. German military surplus, but handpicked to give you the best of the offerings...
    HKP-18887
    $122.95
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    $122.95
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  • Out Of Stock
    New - H&K HK53/51 Vented Handguard - Vertical - HKP-00469 HK53, HK51 Vented Handguard - Vertical

    HK53, HK51 Vented Handguard - Vertical

    H&K Heckler & Koch

    $149.95
    HK German HK53, HK51 Vented Hand Guard - Vertical Style This HK German part is the proper length for use on the HK 53 or HK51 length receivers. The handguard is vented on all 3 sides to promote barrel cooling and provide additional grip. Compatible...
    HKP-00469
    $149.95
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  • New - HKP MP5 40,10 Magazine Release Paddle Lever - HKP-01274 HK MP5 Paddle Magazine Release Lever - .40 S&W, 10mm
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    HK MP5 Paddle Magazine Release Lever - .40 S&W, 10mm

    HKP HK Parts

    $59.95
    HKP HK Parts Magazine Release Lever for .40 S&W and 10mm HK MP5  Compatible with MP5  
    HKP-01274
    $59.95
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    $59.95
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  • New - H&K MP5, SP5 4 Position 0,1 Trigger Group - Universal Trigger group - HKP-16725
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    HK MP5, SP5 4 Position 0,1 Trigger Group - Universal Trigger group

    H&K Heckler & Koch

    $1,999.95
    H&K MP5, SP5 4 Position 0,1 Trigger Group - Universal Trigger group New HK German MP5, SP5 9mm 4 Position Burst (0,1,3, F) Trigger Housing professionally clipped & pinned and paired with a factory German MP5 trigger pack ready for your semi-auto...
    HKP-16725
    $1,999.95
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  • New - H&K MP5 9mm Cocking Tube - HKP-00093
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    HK MP5 Cocking Tube - 9mm

    H&K Heckler & Koch

    $109.95
    H&K MP5 9mm Cocking Tube New factory German HK uninstalled part directly from HK Germany. Rare and hard to find. Compatible With: MP5, 94, SP5 MP5 clones or other custom builds
    HKP-00093
    $109.95
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  • Out Of Stock
    Used - H&K MP5, MP5K Case Deflector - HKP-00871 HK MP5, MP5K Case Deflector

    HK MP5, MP5K Case Deflector

    H&K Heckler & Koch

    $0.00
    HK German case deflector for receiver flat or receiver for all MP5, HK94, MP5K & SP89 builds. The case deflector is riveted or welded in place on the ejection port of the 9mm receiver/flat to aid in the extraction of the 9mm round. HK MP5, 94 HK...
    HKP-00871
    $0.00
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  • New - HKP 9mm Ambidextrous US Made Trigger Pack with Flat Trigger - 4 U.S. 922 Parts - HKP-18512 Ambi Trigger Pack - Semi Auto 0,1 - 9mm - Flat Trigger - US Made 922r Parts
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    Ambi Trigger Pack - Semi Auto 0,1 - 9mm - Flat Trigger - US Made 922r Parts

    HKP HK Parts

    $349.95
    Ambidextrius Trigger Pack with Flat Trigger For MP5, HK94 - 4 US 922R Compliant Parts HK MP5/94 9mm Semi Auto Trigger Pack complete with Flat Trigger installed. Assembled and ready install on your firearm.   The components that count towards 4 of...
    HKP-18512
    $349.95
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  • HK MP5K Apparel and Patch Collection - K Series Hats, Patches, and Shirts - V1 HK MP5K Apparel and Patch Collection - K Series Hats, Patches, and Shirts - V1
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    HK MP5K Apparel and Patch Collection - K Series Hats, Patches, and Shirts - V1

    HKP HK Parts

    $0.00
    HKP HK MP5K Apparel and Patch Collection - Version 1 Represent your platform with the HK Parts K Series apparel and accessories lineup. Built for enthusiasts who appreciate iconic firearms and clean, understated design, this collection delivers premium...
    HKP-22454-M
    $0.00
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  • Out Of Stock
    New - H&K MR556 A4 Hammer Spring - HKP-22083

    HK MR556 A4 Hammer Spring

    H&K Heckler & Koch

    $5.95
    H&K MR556 A4 Hammer Spring Genuine H&K hammer spring for the MR556 A4. Compatible With: HK MR556 A4
    HKP-22083
    $5.95
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  • Out Of Stock
    New - H&K VP9/P30 A1 17 Round Magazine Floorplate - HKP-21979 HK VP9 A1, P30 A1 Magazine Floorplate - 9mm - 17 Round

    HK VP9 A1, P30 A1 Magazine Floorplate - 9mm - 17 Round

    H&K Heckler & Koch

    $21.95
    H&K VP9/P30 A1 17 Round Magazine Floorplate Factory replacement floorplate for VP9 and P30 17-round magazines. Compatible with HK VP9/P30 A1 17 round magazines HK VP9/P30 17 round magazines HK VP9/P30 15 when used with a 17-round magazine locking...
    HKP-21979
    $21.95
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