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 - H&K HK MR556/416 Ejection Door Lock Bolt Pin - HKP-02536
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    HK416, MR556 Ejection Door Lock Roll Pin

    H&K Heckler & Koch

    $4.95
    HK MR556 & HK416 Ejection Door Lock Bolt/Roll Pin Compatible With: HK416 A1, A3, A5 HK MR556 A1, A4
    HKP-02536
    $4.95
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    $4.95
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  • New - PTR Universal Windage Adjustment Knob For Rear Sight - HKP-01444 PTR Universal Windage Adjustment Knob For Rear Sight
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    PTR Universal Windage Adjustment Knob For Rear Sight

    PTR

    $9.95
    HK 90 Series Hand Windage Adjustment Knob For Rear Sights Steel windage screw that allows you to adjust the windage for the rear sights with a quick and easy adjustment without the use of a screwdriver as found on the factory rear sight screws. Perfect...
    HKP-01444
    $9.95
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    $9.95
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  • Used - HKP HK 91/G3 (7.62x51/.308) Stock Set - Jungle Green - Surplus - HKP-16331 HK91, G3 Buttstock, Grip, Handguard Set - Jungle Green - Surplus
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    HK91, G3 Buttstock, Grip, Handguard Set - Jungle Green - Surplus

    H&K Heckler & Koch

    $26.95
    Original German Army Used Surplus G3, 91, PTR Tropical/Jungle Green Stock Set  Factory HK German production. Each stock set is used but in perfect working order. Each set is in overall good condition. Most will clean up nicely with a little TLC. A...
    HKP-16331
    $26.95
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    $26.95
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  • Out Of Stock
    New - PTR HK 93/91/33/53/G3 (5.56/.223) & (7.62x51/.308) Central Stock Section With Butt Pad - HKP-00379 HK33, HK53, HK93, HK91, G3 Central Stock Section With Butt Pad

    HK33, HK53, HK93, HK91, G3 Central Stock Section With Butt Pad

    PTR

    $99.95
    U.S. HK 91, G3, PTR Central Stock Section Black With Butt Pad  Compliant parts are hard to find and are important for keeping your HK G3, HK 91, HK33, and 93 build 922r compliant.  Compatible With: HK G3, 91, PTR CETME HK 93, 33, 53 Other...
    HKP-00379
    $99.95
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  • New - HKP MP5K/SP89 9mm Handguard - M-LOK - HKP-17264 HK MP5K, SP89 Handguard - MLOK
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    HK MP5K, SP89 Handguard - MLOK

    HKP HK Parts

    $89.95
    HKP MP5K/SP89 9mm Handguard - M-LOK The M-LOK tactical handguard installs on your firearm with minimal effort, no fitting required. Designed from the ground up by roller-lock enthusiasts.  Features: Made in the USA (922r compliant) Accepts ALL...
    HKP-17264
    $89.95
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    $89.95
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  • New - H&K HK USP/Mark 23 .45 ACP Magazine Locking Plate - HKP-01588 HK USP, Mark 23 Magazine Locking Plate - .45 ACP
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    HK USP, Mark 23 Magazine Locking Plate - .45 ACP

    H&K Heckler & Koch

    $8.95
    HK Magazine Locking Plate For .45 Cal - 12 Round Magazines New HK German magazine locking plate. Compatible With: HK Mark 23 12 Round HK USP .45 12 Round
    HKP-01588
    $8.95
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    $8.95
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  • On Sale
    HK MP5, AP5 OEM Picatinny Rail MKE HKP-22335 HK MP5, AP5 OEM Picatinny Rail MKE HKP-22335
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    HK MP5, AP5 Optic Mount - Picatinny

    MKE

    Now: $39.95
    Was: $49.95
    MKE HK MP5, AP5 OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5 platform. OEM part for the Century AP5.  Compatible With: HK MP5/SP5 Century Arms AP5 In-spec. clones and custom builds
    HKP-22335
    Now: $39.95
    Was: $49.95
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    Now: $39.95
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  • Out Of Stock
    New - H&K 10 Round HK P2000SK 9mm Magazine - Red Follower - HKP-21432 HK P2000SK Magazine - 9mm - 10 Round - Red Follower

    HK P2000SK Magazine - 9mm - 10 Round - Red Follower

    H&K Heckler & Koch

    $58.99
    HK P2000 SK 9mm - 10 Round Magazine with Finger Rest - Red Follower HK German manufacture and factory fresh production. Each factory HK all-steel-bodied magazine holds 10 rounds of 9mm ammunition. Compatible With: HK P2000SK  
    HKP-21432
    $58.99
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  • New - HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH - HKP-21124 HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH
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    HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH

    HKP HK Parts

    $29.95
    HKP 9mm Knurled Micro Comp - Threaded 1/2x28 RH The HK Parts Micro Comp & Thread Protector is a sleek, functional solution for enhancing your 9mm pistol's performance. Designed to be lightweight and efficient, this micro compensator easily attaches...
    HKP-21124
    $29.95
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    $29.95
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  • Used - H&K 33/91/93/G3 (5.56/.223) & (7.62x51/.308) Triple Frame Front Sight Tower - HKP-16734 HK33, HK93, HK91, G3 Triple Frame Front Sight Tower - Sight Blade
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    HK33, HK93, HK91, G3 Triple Frame Front Sight Tower - Sight Blade

    H&K Heckler & Koch

    $14.95
    HK German Front Sight Tower Triple Frame- Used Surplus Used G3 triple frame in Good shape. Just needs a good refinishing. Comes complete with sight blade and roll pin installed. Used surplus pulled from HK German demilled G3's Comaptible With: HK 91 HK...
    HKP-16734
    $14.95
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  • New - H&K Semi Trigger Pack Or Sear Pack Elbow Spring W/ Roller - HKP-00070
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    HK Spring - Bent Elbow with Roller - Semi - Trigger, Sear Pack

    H&K Heckler & Koch

    $29.95
    H&K Heckler and Koch Semi Trigger Pack Or Sear Pack Elbow Spring W/ Roller Each spring is a great replacement for the converted packs that have bent elbow springs or for those that used the original F/A elbow springs that were bent to shape and are...
    HKP-00070
    $29.95
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    $29.95
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  • Out Of Stock
    New - B&T HK MP5SD 9mm Barrel - Threaded 18x1 RH - HKP-17957 HK MP5SD Barrel - 9mm - 5.75" - Threaded 18x1 RH

    HK MP5SD Barrel - 9mm - 5.75" - Threaded 18x1 RH

    B&T Brugger & Thomet

    $449.95
    B&T HK MP5SD 9mm Barrel - Threaded 18x1 RH New from B&T Switzerland, this cold hammer forged (CHF), ported, and nitrided barrel is designed to meet factory HK specifications exclusively for MP5SD models. With a long-standing relationship with...
    HKP-17957
    $449.95
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    $449.95
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