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 APC MBT Folding Stock - HKP-21738 B&T APC  Stock - Folding - MBT
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    B&T APC Stock - Folding - MBT

    B&T Brugger & Thomet

    $365.00
    B&T MBT Folding Stock for APC (Stock Only, No Hydraulic Buffer)  Features: 8 position length adjustment Telescoping cheek riser w/ 3 position height adjustment Folds to the right canted downward 3.5 degrees Locks folded Fires...
    HKP-21738
    $365.00
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    $365.00
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  • New - B&T TP9N Foregrip - HKP-21719 B&T TP9N Foregrip
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    B&T TP9N Foregrip

    B&T Brugger & Thomet

    $100.00
    B&T TP9N Foregrip Factory B&T black foregrip for the TP9N firearm. Compatible With: B&T TP9N
    HKP-21719
    $100.00
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    $100.00
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  • Out Of Stock
    New - Nefarious Arms HK 416/MR556 14.5" A5 Barrel - HKP-21590 HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28 - A5

    Nefarious Arms

    $594.95
    Nefarious Arms HK 416/MR556 14.5" A5 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting.  Grab this expertly crafted barrel for your next SBR or pistol build.  Compatible With: HK 416 (A5,...
    HKP-21590
    $594.95
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    $594.95
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  • Used - HK G3 Incomplete Backplate - Painted - HKP-21541 HK G3 Incomplete Backplate - Painted
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    HK G3 Incomplete Backplate - Painted

    H&K Heckler & Koch

    $29.95
    HK G3 Incomplete Backplate -  Factory German G3 refinished backplate. A great replacement or spare to have around to replace your broken or worn out backplates.  Please note you will need two rivets, nylon ring, recoil spring in order to...
    HKP-21541
    $29.95
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  • New - HKP HK UMP 5 Prong Flash Hider - 5/8x24 - HKP-21523 HK UMP 5 Prong Flash Hider - 5/8x24
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    HK UMP 5 Prong Flash Hider - 5/8x24

    HKP HK Parts

    $67.95
    HKP HK UMP 5 Prong Flash Hider - 5/8x24 Compatible With: HK UMP
    HKP-21523
    $67.95
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  • On Sale
    New - JMAC G36K/HK33 Compensator (KeyMicro) - Threaded 15x1 - HKP-21257 HK G36K, HK33 Compensator - KeyMicro - Threaded 15x1
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    HK G36K, HK33 Compensator - KeyMicro - Threaded 15x1

    JMAC Customs

    Now: $86.95
    Was: $109.95
    JMAC 5.56 / .223 KeyMicro Compensator Threaded 15x1 for HK G36K and HK33 In order to use this device with a suppressor, it must be installed by a professional to ensure it is properly mounted and aligned. Do NOT shoot without checking alignment with bore...
    HKP-21257
    Now: $86.95
    Was: $109.95
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    Now: $86.95
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  • New - Blitzkrieg PTR Flat Tip Front Sight Gen 2 - Orange - HKP-21103 PTR Flat Tip Front Sight - Gen 2 - Orange
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    PTR Flat Tip Front Sight - Gen 2 - Orange

    Blitzkrieg Components

    $84.95
    Blitzkrieg PTR Flat Tip Front Sight Gen 2 - Orange The Blitzkrieg Gen 2 HK-style front sight delivers a fast and precise aiming point with its conventional flat-tipped post and bright orange stripe. Designed for easy installation, it utilizes a roll pin...
    HKP-21103
    $84.95
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    $84.95
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  • On Sale
    New - HKP Racerback - Mint - HKP-21029-M HKP Racerback Tank - Mint
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    HKP Racerback Tank - Mint

    HKP HK Parts

    Now: $7.46
    Was: $14.95
    HKP Racerback Tank - Mint Get your hands on some of our premium new apparel! Featuring our sleek new logo printed over soft cotton, this racerback is certain to catch an eye at the range!  Features: Female fit Fine cotton High fidelity DTG...
    HKP-21029-M
    Now: $7.46
    Was: $14.95
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    Now: $7.46
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  • Out Of Stock
    New - B&T Vertical Fixed Unigrip - Black - HKP-18043

    Picatinny Vertical Fixed Unigrip

    B&T Brugger & Thomet

    $119.00
    B&T Brugger and Thomet Vertical Fixed Unigrip for  Swiss made B&T vertical forend grip for picatinny. Made of aluminum Will fit all mil-spec picatinny rails. Measures long. Specifications: Condition: Factory new Color: Black Material:...
    HKP-18043
    $119.00
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  • Used - H&K German Leather Sling - Well Used with No Loop - HKP-20583 HK G3 Leather Sling - Well Used with No Loop
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    HK G3 Leather Sling - Well Used with No Loop

    H&K Heckler & Koch

    $39.80
    Original Surplus German HK Leather - Well Used with No Loop Pulled from German military G3 rifles. Last of the remaining units, get them before they are gone. Compatible With: HK91, G3 PTR91, CETMEHK93 HK33, HK53 HK94 MP5 HK clones Other custom...
    HKP-20583
    $39.80
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  • Out Of Stock
    New - Trijicon HK SP89, Carbines, Rifles Bright & Tough Night Sights - HKP-20321 HK SP89, Carbines, Rifles Bright and Tough Night Sights

    HK SP89, Carbines, Rifles Bright and Tough Night Sights

    Trijicon

    $159.95
    Trijicon HK SP89, Carbines, Rifles Bright & Tough Night Sights Trijicon bright & tough night sights are three-dot iron sights that increase night-fire shooting accuracy by as much as five times over conventional sights. Equally impressive, they...
    HKP-20321
    $159.95
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  • New - H&K Tactical Pistol Bag - Tan - HKP-20288 HK Tactical Pistol Bag - Tan
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    HK Tactical Pistol Bag - Tan

    H&K Heckler & Koch

    $69.95
    H&K Tactical Pistol Bag - Tan Keep your handgun safe and secure with the HK tactical nylon case. This heavy duty case will accommodate two pistols, accessories and two magazines. Includes movable, velcro-backed modular double magazine pouch, frame...
    HKP-20288
    $69.95
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    $69.95
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