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 - B&T HK MP5 9mm Barrel - Threaded 1/2x28 - 3-Lug - HKP-17955 HK MP5 Barrel - 9mm - Threaded 1/2x28 with 3 Lug
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    HK MP5 Barrel - 9mm - Threaded 1/2x28 with 3 Lug

    B&T Brugger & Thomet

    $378.95
    B&T HK MP5 9mm Barrel - Threaded 1/2x28 - 3-Lug New from B&T Switzerland, these MP5 barrels are cold hammer forged, fluted, and nitrided to exact HK specifications. B&T's close relationship with H&K and extensive history of...
    HKP-17955
    $378.95
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  • On Sale
    New - HKP HK45C Railok™ Compensator - Black - HKP-21224 HK45C Railok™ Compensator
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    HK45C Railok™ Compensator

    HKP HK Parts

    Now: $129.95
    Was: $189.95
    HK Parts Railok™ Mounting System Compensator: H&K HK45C The HK Parts Railok™ mounting system compensator strikes a seamless balance of form and function.  Users will immediately notice the reduction in muzzle flip and recoil,...
    HKP-21224
    Now: $129.95
    Was: $189.95
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    Was: $189.95
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  • On Sale
    New - HKP HK Mark 23 Compensator / Rail Replacement Screw - HKP-21060 HK Mark 23 Replacement Screw for Rail Mount Compensator
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    HK Mark 23 Replacement Screw for Rail Mount Compensator

    HKP HK Parts

    Now: $9.45
    Was: $14.95
    HKP HK Mark 23 Compensator / Rail Replacement Screw Replacement Screw for the HK Parts Mark 23 Rail Mount Compensators. This includes (1) screw. Compatible with: HK Parts MK23 rail mount compensators Torque: Hand tight
    HKP-21060
    Now: $9.45
    Was: $14.95
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    Now: $9.45
    Was: $14.95
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  • Out Of Stock
    New - RCM HK P30L 9mm Tactical Barrel - Threaded 1/2x28 RH - HKP-20496 HK P30L Tactical Barrel - 9mm - 5.06" - Threaded 1/2x28 RH

    HK P30L Tactical Barrel - 9mm - 5.06" - Threaded 1/2x28 RH

    RCM

    $225.00
    RCM HK P30L 9mm Tactical Barrel - Threaded 1/2x28 RH Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the finest threaded replacement barrel for the HK P30L 9mm pistol...
    HKP-20496
    $225.00
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  • New - MI Pistol Brace Compatible Side Folder - HKP-19959 Side Folding Bar for Tailhook Brace
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    Side Folding Bar for Tailhook Brace

    MI Midwest Industries

    $129.95
    MI Pistol Brace Compatible Side Folder   For use with Gear Head Works Tailhook Pistol Brace   Features: Made in the USA Heavy duty side folding mechanism constructed from 4140 steel Full length locking lug for maximum strength. Solid positive...
    HKP-19959
    $129.95
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  • Out Of Stock
    New - ETS 30 Round HK VP9 9mm Magazine - Translucent - HKP-19197 ETS 30 Round HK VP9 9mm Magazine - Translucent

    ETS 30 Round HK VP9 9mm Magazine - Translucent

    Elite Tactical Systems

    $21.99
    30 Round Magazine - Elite Tactical Systems - 9mm - HK VP9, VP9L Features: Extended 30-round capacity Base plates interchangeable with ETS line of 9mm double stack magazines. Easy disassembly with our specially designed base plate Ergonomically designed...
    HKP-19197
    $21.99
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    Qty in Cart: 0
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  • New - HKP Short Sleeve Tee - Tan - HKP-21027-M
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    HKP Shirt - Short Sleeve - Tan

    HKP HK Parts

    $14.95
    HKP Short Sleeve Shirt - Tan Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this shirt is certain to catch an eye at the range! Features: Unisex fit Fine cotton High Fidelity DTG...
    HKP-21027-M
    $14.95
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  • New - H&K HK MR556/416 A5 Ambi Selector Lever Set Complete - Black - HKP-19375 HK416A5, MR556 Ambi Selector Lever Set Complete
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    HK416A5, MR556 Ambi Selector Lever Set Complete

    H&K Heckler & Koch

    $179.95
    H&K HK MR556/416 A5 Ambi Selector Lever Set Complete New HK German manufacture. Complete kit to upgrade the selector lever set on the MR556 to the newer HK 416A5 semi style of levers. A drop in upgrade for the MR556 & CR556. Includes: HK 416 A5...
    HKP-19375
    $179.95
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  • New - H&K HK MR762/417/G28 Slim Line Stock - RAL 8K - HKP-17136 HK417, MR762, G28 Stock - Slim Line - RAL8000
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    HK417, MR762, G28 Stock - Slim Line - RAL8000

    H&K Heckler & Koch

    $145.95
    H&K HK MR762/417/G28 Slim Line Stock - RAL 8K New from HK Germany the slim line retractable stock fits all MR762, HK 417 buffer tubes. Marked with the HK logo and issued on specialized HK 417, MR762 rifles. Compatible With: HK MR762 HK 417 HK...
    HKP-17136
    $145.95
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    Qty in Cart: 0
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  • New - HK P30SK 9mm Complete Recoil Spring Assembly - HKP-17938
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    HK P30SK 9mm Complete Recoil Spring Assembly

    H&K Heckler & Koch

    $64.95
    HK P30SK 9mm Complete Recoil Spring Guide Rod Assembly Brand new HK German manufacture. Compatible With: P30SK 9mm
    HKP-17938
    $64.95
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    $64.95
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  • New - H&K 30/32 Round HK USP/P30/VP9 Magazine Spring - HKP-16407 HK USP, P30, VP9 Magazine Spring - 30 / 32 Round
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    HK USP, P30, VP9 Magazine Spring - 30 / 32 Round

    H&K Heckler & Koch

    $9.95
    H&K 30/32 Round HK USP/P30/VP9 Magazine Spring HK German manufacture new production HK USP 9mm 32 round magazine spring. A super rare and hard to find part for the USP 9mm extended 32 round magazines. This spring took years of searching to find in...
    HKP-16407
    $9.95
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    $9.95
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  • New - H&K USC (.45 ACP) Carbine Mag Release - HKP-02196
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    HK USC Magazine Release - .45 ACP

    H&K Heckler & Koch

    $19.95
    H&K USC (.45 ACP) Carbine Mag Release This is a great replacement as they are prone to breakage & wear. Please Note: For those that have a USC with a bullet button and are moving to a free state and want to revert back to the...
    HKP-02196
    $19.95
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    $19.95
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