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
    New - HK Parts Range Bag - Large - HKP-20741 HKP Range Bag - Large
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    HKP Range Bag - Large

    HKP HK Parts

    Now: $27.95
    Was: $34.95
    HK Parts Range Bag - Large Get your hands on our new premium range bags. Main cover has loop fastener panel for hook and loop patches and name tape and a top hook and loop fastener loop for securing hearing protection for easy access when at the shooting...
    HKP-20741
    Now: $27.95
    Was: $34.95
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  • New - H&K 10 Round HK USPC/P2000 9mm Magazine w/ Pinky Rest - HKP-01460-M HK USPC, P2000 Magazine with Pinky Rest - 9mm - 10 Round
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    HK USPC, P2000 Magazine with Pinky Rest - 9mm - 10 Round

    H&K Heckler & Koch

    $59.95
    USP Compact & P2000 9mm Magazine – Complete (10-Round with Extended Floor Plate) Brand new HK German manufactured. Meets the requirements of areas with high capacity 10-round magazine restrictions. Compatible With: HK USP Compact 9mm HK P2000...
    HKP-01460-M
    $59.95
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  • Out Of Stock
    New - H&K HK MR556/416 Ejection Port Cover - FDE - HKP-18062 HK416, MR556 Ejection Port Cover - FDE

    HK416, MR556 Ejection Port Cover - FDE

    H&K Heckler & Koch

    $59.95
    Heckler and Koch German HK 416, MR556 Ejection Port Cover In FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 and HK MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest...
    HKP-18062
    $59.95
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  • On Sale
    HK CC9 Complete Magazine - 15 Round - 9mm HK CC9 Complete Magazine - 15 Round - 9mm
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    HK CC9 Complete Magazine - 15 Round - 9mm

    HKP HK Parts

    $63.95 - $79.95
    HKP HK Parts - HK CC9 Complete Magazine - 15 Round - 9mm This fully assembled 15-round magazine for the CC9 combines a factory German 12-round magazine with the HK Parts +3 magazine extension. Compatible With: HK CC9
    HKP-22038-M
    $63.95 - $79.95
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  • On Sale
    New - KES HK MP5K Tailhook - HKP-21089 HK MP5K Stock Adapter - Tailhook KES
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    HK MP5K Stock Adapter - Tailhook KES

    Safety Harbor Firearms

    Now: $251.95
    Was: $279.95
    KES HK MP5K Tailhook The all-new KES for the MP5k is designed to fit HK clones with two pins affixing the rear receiver cap. Specifications: Guide rods slide into the existing slots present on the receiver Rods machined to go underneath the reinforcing...
    HKP-21089
    Now: $251.95
    Was: $279.95
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    Was: $279.95
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  • On Sale
    New - HKP Roller +5 - New - 8.05mm - HKP-19440 Bolt Head Locking Roller +5 - 8.05mm - New
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    Bolt Head Locking Roller +5 - 8.05mm - New

    HKP HK Parts

    Now: $6.95
    Was: $8.99
    Roller +5 - New - 8.05mm HK Parts Standard (8.05 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way...
    HKP-19440
    Now: $6.95
    Was: $8.99
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  • New - H&K UMP (.45 ACP) 25 Round Magazine - HKP-00605 HK UMP Magazine - 25 Round - .45 ACP
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    HK UMP Magazine - 25 Round - .45 ACP

    H&K Heckler & Koch

    $145.95
    New HK Heckler and Koch Non-LE, Mil Marked .45 ACP 25 Round Magazine for HK UMP The UMP .45 magazines will fit all UMP factory firearms as well as the USC's that have been converted to accept UMP magazines. Compatible With: HK UMP .45 HK USC to UMP . 45...
    HKP-00605
    $145.95
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  • Out Of Stock
    New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Barrel Roll Pin - HKP-00603

    HK UMP, USC Barrel Roll Pin

    H&K Heckler & Koch

    $11.94
    Heckler and Koch German made USC and UMP Universal Barrel Roll Pin HK recommends replacing the barrel pin when the barrel is removed with a new barrel pin. This is a great spare part to have on hand. The factory-correct barrel pin for all HK UMP and USC...
    HKP-00603
    $11.94
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  • On Sale
    New - RCM HK MP5SD 9mm Barrel - Threaded 18x1 - HKP-02118 HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1
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    HK MP5SD Barrel - 9mm - 5.74" - Threaded 18x1

    RCM

    Now: $179.95
    Was: $199.95
    RCM HK MP5SD 9mm Barrel - Threaded 18x1 RCM HK Style MP5 SD Barrel.  Specifications:  Made In The USA Cold Hammer Forged Steel (CHF) 16 Fluted Chamber Threaded 18x1 Overall Length 5.74" Nitride Finish To Entire Surface Of Barrel...
    HKP-02118
    Now: $179.95
    Was: $199.95
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    Was: $199.95
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  • On Sale
    New - MI HK MP5 Tri-Rail Handguard - HKP-21485 HK MP5 Handguard - Tri-Rail
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    HK MP5 Handguard - Tri-Rail

    MI Midwest Industries

    Now: $152.95
    Was: $169.95
    MI HK MP5 Tri-Rail Handguard   Features: Professional grade one-piece design Tri-Rail 1913 Picatinny on 3 sides for accessory attachment Simple installation includes all tools Extremely lightweight design Features two anti-rotation QD sling swivel...
    HKP-21485
    Now: $152.95
    Was: $169.95
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    Now: $152.95
    Was: $169.95
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  • On Sale
    New - Magpul HK MP5K, HK SP5K, HK SP89 SL Hand Guard - Black - HKP-19310 HK MP5K, SP5K, SP89 Handguard with Handstop - SL
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    HK MP5K, SP5K, SP89 Handguard with Handstop - SL

    Magpul

    Now: $41.95
    Was: $47.45
    Magpul HK MP5K, HK SP5K, HK SP89 SL Handguard The Magpul SL Handguard for the SP89/MP5K/SP5K is a high-strength, injection-molded polymer handguard solution that provides the user with improved ergonomics, anti-slip texturing,...
    HKP-19310
    Now: $41.95
    Was: $47.45
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  • On Sale
    New - RCM MP5K/SP89 9mm Full Auto Bolt Carrier - HKP-01190 HK MP5K, SP89 Bolt Carrier - Full Auto - 9mm - USA
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    HK MP5K, SP89 Bolt Carrier - Full Auto - 9mm - USA

    RCM

    Now: $134.95
    Was: $149.95
    MP5K Full Auto Bolt Carrier - US- Made - RCM This part is machined from billet ordnance steel. Our US-made MP5K carrier is made to the most updated and latest MP5K F specs. Tungsten filled, heat treated, and factory fresh production. Providing the finest...
    HKP-01190
    Now: $134.95
    Was: $149.95
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    Now: $134.95
    Was: $149.95
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