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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  • Out Of Stock
    New - H&K HK MR556/MR762/416/417 Rear Lower Receiver Locking Pin - HKP-02672

    HK416, MR556, HK417, MR762 Takedown Pin - Rear - A1 Style

    H&K Heckler & Koch

    $79.95
    H&K HK MR556/MR762/416/417 Rear Lower Receiver Locking Pin This is the rear takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve...
    HKP-02672
    $79.95
    Out Of Stock
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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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    $14.95
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  • New - RCM MP5, HK94, MP5K & SP89 9mm Bolt Head - HKP-01241 HK MP5, MP5K, SP5, SP5K Bolt Head - 9mm
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    HK MP5, MP5K, SP5, SP5K Bolt Head - 9mm

    RCM

    $221.95
    HK MP5, 94, MP5K, & SP89 9mm - Complete Bolt Head Each bolt head incorporates a mixture of the finest quality US-made and factory German HK parts, making a new complete bolt head ready for use. Use this to replace out-of-spec bolt heads and worn-out...
    HKP-01241
    $221.95
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    $221.95
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  • On Sale
    New - HKP SIG P320C Compensator - HKP-21092 Sig Sauer P320C Compensator
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    Sig Sauer P320C Compensator

    HKP HK Parts

    Now: $99.95
    Was: $189.95
    HKP SIG P320C Compensator Our P320 P320C compensator reduces recoil and muzzle flip. Each unit is 100% US-made and finished in durable black cerakote.  Our P320C compensator features a Picatinny rail to mount lights/lasers. Available exclusively at...
    HKP-21092
    Now: $99.95
    Was: $189.95
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    Now: $99.95
    Was: $189.95
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  • New - HKP HK VP9 Optics Plate #11 - Sig Romeo Zero Optic Mount - HKP-20029 HK VP9 Optic Plate #11 - Sig Romeo Zero - Red Dot Pistol Mount
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    HK VP9 Optic Plate #11 - Sig Romeo Zero - Red Dot Pistol Mount

    HKP HK Parts

    $49.95
    HK VP9 Series Optics Ready #11 - Sig Romeo Zero - Optic Mount - Steel The finest all steel mounting solution for your HK VP9 Series Opitc Ready model. New solid billet machined steel optics plate. Each plate is CNC machined from a solid billet of...
    HKP-20029
    $49.95
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    $49.95
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  • On Sale
    New - SB Tactical FS1913 Folding Pistol Stabilizing Brace - Black - HKP-19132 FS1913 Stabilizing Brace - Folding
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    FS1913 Stabilizing Brace - Folding

    SB Tactical

    Now: $207.95
    Was: $260.99
    SB Tactical FS1913 Folding Pistol Stabilizing Brace A low-profile, left side-folding, strut design compatible with all platforms utilizing an M1913 interface at the rear of the receiver. The FS1913 is a complete assembly offering pull-through opening and...
    HKP-19132
    Now: $207.95
    Was: $260.99
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    Now: $207.95
    Was: $260.99
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  • New - HKP +7 HK VP9/HK P30 Magazine Extension Kit - HKP-19456-M HK VP9, P30 Magazine Extension Kit - +7
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    HK VP9, P30 Magazine Extension Kit - +7

    HKP HK Parts

    $54.95
    HKP +7 HK VP9/P30 Magazine Extension Kit The HK Parts +7 magazine extension kit adds 7 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate & mag spring. Each kit includes the +7 extension and an enhanced spring. This...
    HKP-19456-M
    $54.95
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  • New - Magpul SL HK MP5K - Binary Trigger Group - HKP-21408-M HK MP5K, SP89, SP5K Binary Trigger Group - 9mm
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    HK MP5K, SP89, SP5K Binary Trigger Group - 9mm

    Magpul / FA Franklin Armory

    $889.95 - $919.95
    Magpul SL HK MP5K - Binary Trigger Group Perfect for those seeking a binary option combined with the comfort of a Magpul housing. We've paired a Magpul SL housing with our compatible binary selector levers and completed it with a Franklin Armory trigger...
    HKP-21408-M
    $889.95 - $919.95
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    $889.95 - $919.95
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  • New - RCM HK MP5 / 416 .22LR Rifle Barrel-16.1" - HKP-21407 HK MP5, HK416 Barrel - .22LR - 16.1"
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    HK MP5, HK416 Barrel - .22LR - 16.1"

    RCM

    $199.95
    RCM .22LR Rifle Barrel for HK MP5 and HK416  This is the first and only offering of a replacement barrel for the HK .22LR platforms.  Replacing the barrel previously required sending the receiver to H&K and having the assembly...
    HKP-21407
    $199.95
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    $199.95
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  • New - H&K 91/G3 (7.62x51/.308) Rear Sight Drum - HKP-01660
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    HK91, G3 Rear Sight Drum

    H&K Heckler & Koch

    $9.95
    HK German Rear Sight Drum .308/7.62 - New Compatible With: HK G3, 91, PTR91, PTR32 HK .308/7.62 models or clones Other HK 308 clones & variants
    HKP-01660
    $9.95
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    $9.95
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  • New - H&K 12 Round HK USPC, HK P2000 .40 S&W Magazine - Black - HKP-02244 HK USPC, P2000 Magazine .40 S&W - 12 Round
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    HK USPC, P2000 Magazine .40 S&W - 12 Round

    H&K Heckler & Koch

    $58.95
    12 Round HK USPC & HK P2000 .40 S&W Magazine Low-profile magazine for concealed carry or a lower profile. Each is brand new old stock and may or may not be LEO marked on the magazine body. Compatible With: HK USP Compact .40 S&W HK P2000 .40...
    HKP-02244
    $58.95
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    $58.95
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  • New - H&K HK MR556/MR762/416 Bolt Catch Pin - HKP-02677
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    HK416, MR556, MR762 Bolt Catch Pin

    H&K Heckler & Koch

    $4.95
    Heckler and Koch HK MR556, HK MR762, and HK416 Bolt Catch Pin The factory roll pin is used to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance Compatible With: HK416,...
    HKP-02677
    $4.95
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    $4.95
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