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 - HKP MP5K/SP5K/SP89 Folding Stock Adapter - Black - HKP-20799 HK MP5K, SP5K, SP89 Folding Stock Adapter
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    HK MP5K, SP5K, SP89 Folding Stock Adapter

    HKP HK Parts

    $139.95
    HKP MP5K/SP5K/SP89 Folding Stock Adapter The HK Parts folding stock adapter is the best option to attach onto the UMP style stock or the B&T  folding stock. Will also work on any other stocks that utilizes the same mounting / folding system...
    HKP-20799
    $139.95
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  • New - RCM HK USP 9mm Tactical Barrel - Threaded 1/2x28 - HKP-16705 HK USP Tactical Barrel - 9mm - 4.86" - Threaded 1/2x28
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    HK USP Tactical Barrel - 9mm - 4.86" - Threaded 1/2x28

    RCM

    $225.00
    RCM HK USP 9mm Tactical Barrel - Threaded 1/2x28 Each barrel is finely and painstakingly made from ordnance grade steel, heat treated and finished inside and out in the ultra-desirable nitride finish. This is the finest replacement barrel available for...
    HKP-16705
    $225.00
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    $225.00
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  • New - H&K HK 45/P30/P2000/USPC Recoil Spring Washer Retainer - HKP-02428
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    HK45, P30, P2000, USP Stop Disc - Recoil Spring

    H&K Heckler & Koch

    $12.95
    HK 45, P30, P2000, & USPC Recoil Spring Washer Retainer This disk supports and keeps the recoil spring centered and captive on the recoil rod itself.  Compatible With: HK45, HK45 Tactical HK45 Compact, HK45 Compact Tactical USP Compact, USP...
    HKP-02428
    $12.95
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    $12.95
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  • Out Of Stock
    New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Front Sight - HKP-00254 HK UMP, USC Front Sight - 9mm / .40 S&W / .45 ACP

    HK UMP, USC Front Sight - 9mm / .40 S&W / .45 ACP

    H&K Heckler & Koch

    $14.95
    New HK German Factory USC/UMP Front Sight This is a common wear or breakage part. This part is easy to swap out by just knocking out the roll pin, replacing it, and then re-inserting the roll pin. This is a common wear or breakage part. Compatible with...
    HKP-00254
    $14.95
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  • HK UMP (9mm) 30 Round Magazine HK UMP (9mm) 30 Round Magazine
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    HK UMP (9mm) 30 Round Magazine

    H&K Heckler & Koch

    $62.95
    HK German UMP 9mm 30 Round Factory Magazine The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP/USC builds
    HKP-00608
    $62.95
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  • New - H&K 91/G3 (7.62x51/.308) 2x20 Mag Pouch - Flectarn - New - HKP-16268 HK91, G3 2x20 Mag Pouch - Flectarn  - New
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    HK91, G3 2x20 Mag Pouch - Flectarn - New

    H&K Heckler & Koch

    $13.95
    New HK German Camo Mag Pouch New Flectarn Camo Magazine Pouch Fits 2 X 20 Round Magazines. New latest issue German dual mag pouch. Holds two 20 round magazines that attaches to German web gear. Each unit comes in the new style German forest flectarn camo...
    HKP-16268
    $13.95
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  • Used - H&K 91/G3 (7.62x51/.308) Full Auto Bolt Carrier - Surplus - HKP-01952 HK91, G3 Bolt Carrier - Full Auto - Surplus
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    HK91, G3 Bolt Carrier - Full Auto - Surplus

    H&K Heckler & Koch

    $149.95
    HK G3 Factory Full Auto Bolt Carrier - German German HK 70'- 80's production used surplus bolt carrier with locking lever, spring, and axle pin installed. Most are NOT date-coded on the top of the carrier. Most will be marked on the side or, more...
    HKP-01952
    $149.95
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  • Out Of Stock
    New - Tac Latch - PTR Spec - HKP-17611 PTR Spec - Tac Latch

    PTR Spec - Tac Latch

    Other

    $69.95
    Tac Latch (latest Generation) PTR Spec - PTR .308 Firearms The new updated style of Tac latch is made specifically for the PTR 91 .308 receiver and will require very little modification to the firearm for installation. A major overhaul of the existing...
    HKP-17611
    $69.95
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  • New - RCM HK 53 Locking Piece #3 - 58 Degree - HKP-02523 HK53 Locking Piece #3 - 58 Degree
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    HK53 Locking Piece #3 - 58 Degree

    RCM

    $49.99
    RCM HK 53 Locking Piece #3 - 58 Degree This is the proper locking piece for the HK33K and HK53 firearms as well as some HK51 builds.
    HKP-02523
    $49.99
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  • New - H&K Burst Trigger Pack Armorers Tool - HKP-00898
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    HK Armorers Tool for Burst Trigger Packs

    H&K Heckler & Koch

    $99.95
    Heckler & Koch Factory Burst Trigger Pack Armorer's Tool A must-have tool to maintain, disassemble, and reassemble burst trigger packs for cleaning and repair. This tool will save you a ton of time and will pay for itself on the first use. Compatible...
    HKP-00898
    $99.95
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  • New - GSG9 HK G36C Gas Piston Rod Spring Assembly - Black - HKP-18250 HK G36C Gas Piston Rod and Spring - Complete Assembly
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    HK G36C Gas Piston Rod and Spring - Complete Assembly

    GSG9

    $82.95
    HK German G36C Gas Piston Rod & Spring Assembly Complete A must have item for HK G36C conversions from SL8's or for spares for your G36C MG. A high wear and replacement part and a must have for spare parts.
    HKP-18250
    $82.95
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  • Out Of Stock
    New - HK P2000SK .40 S&W To .357 SIG Conversion Barrel - Non-Threaded - HKP-20581 HK P2000SK Conversion Barrel - .40 S&W To .357 SIG - Non-Threaded

    HK P2000SK Conversion Barrel - .40 S&W To .357 SIG - Non-Threaded

    RCM

    $239.95
    HK P2000SK .40 S&W To .357 SIG Conversion Barrel - Non-Threaded This is a great spare or replacement barrel to have on hand. Also, a popular barrel to convert the P2000SK .40 S&W to .357 SIG. Specifications: P2000SK Conversion Barrel .40 S&W...
    HKP-20581
    $239.95
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