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 MP5, MP5K 9mm Hammer Spring - HKP-00064 HK MP5, MP5K Hammer Spring - 9mm
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    HK MP5, MP5K Hammer Spring - 9mm

    H&K Heckler & Koch

    $6.89
    HK Heckler & Koch HK MP5, MP5K Spring - Hammer - 9mm Each factory HK hammer spring will work in all 9mm & 40/10 trigger packs. Do not settle for an HK contract when you can have HK German for less. Great upgrade for all of the clones that use the...
    HKP-00064
    $6.89
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    $6.89
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  • On Sale
    New - HKP HK USP/P30/P2000 Light Hammer Spring - HKP-16489 HK USP, P30, P2000 Hammer Spring - Light
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    HK USP, P30, P2000 Hammer Spring - Light

    HKP HK Parts

    Now: $6.95
    Was: $8.95
    HKP HK USP/P30/P2000 Light Hammer Spring Finally a New US Production 10 lb. Hammer Spring For HK USP, P30 & P2000. Brought about by many customers asking for a 2 lb. lighter hammer spring than stock (12 lb.). This is also a popular hammer spring used...
    HKP-16489
    Now: $6.95
    Was: $8.95
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  • On Sale
    HK MP5, SP5, MP5K, SP5K Magazine - 9mm - 30 Round - Molykote® - Seconds HK MP5, SP5, MP5K, SP5K Magazine - 9mm - 30 Round - Molykote® - Seconds
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    HK MP5, SP5, MP5K, SP5K Magazine - 9mm - 30 Round - Molykote® - Seconds

    Other

    Now: $25.95
    Was: $36.95
    Turkish Contract MP5, SP5, MP5K, SP5K 9mm Molykote® 30 Round Magazine - Seconds Turkish contract 30 round 9mm magazine for HK MP5 and MP5K pattern firearms. Finished with Molykote®, a specialty anti-friction coating formulated to help reduce...
    HKP-22559
    Now: $25.95
    Was: $36.95
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  • On Sale
    New - MKE HK MP5/MP5K Replacement Parts Kit - HKP-21896
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    HK MP5, MP5K Replacement Parts Kit

    MKE

    Now: $19.95
    Was: $24.95
    MKE Replacement Parts Kit for your HK MP5 and HK MP5K Firearm Keep your MP5 or MP5K in peak condition with this comprehensive MKE HK MP5/MP5K replacement parts kit. Manufactured to exacting standards by MKE, this kit includes high-quality replacement...
    HKP-21896
    Now: $19.95
    Was: $24.95
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  • On Sale
    New - MFI Universal Low Profile Scope Mount - HKP-00762 HK MP5 Optic Mount - Low Profile - Picatinny
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    HK MP5 Optic Mount - Low Profile - Picatinny

    MFI

    Now: $111.95
    Was: $124.95
    MFI's crafted HK MP5 Series Mount - Low Profile Scope - Universal MFI's universal mount will fit all models from 9mm through .308. The sleek design allows the operator to flip the scope mount in either direction without blocking the ejection port (MP5...
    HKP-00762
    Now: $111.95
    Was: $124.95
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  • Used - H&K German Roller Retainer Plate For Rollers - HKP-02690 HK German Roller Retainer Plate For Rollers
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    HK German Roller Retainer Plate For Rollers

    H&K Heckler & Koch

    $7.95
    HK German Roller Retainer Plate For All Rollers - Used This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with the use and age of the service weapon.  Compatible With All Original 1st...
    HKP-02690
    $7.95
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  • New - H&K 10 Round HK USPC/45C .45 ACP Magazine - Black - HKP-00304 HK45C, USPC Magazine - .45 ACP - 10 Round
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    HK45C, USPC Magazine - .45 ACP - 10 Round

    H&K Heckler & Koch

    $59.95
    Heckler and Koch 10 Round Magazine for HK45C and USP Compact - .45 ACP HK German 10-round magazine for HK45C and USPc pistols chambered in .45 ACP. Features an extended rubberized base plate and factory HK construction. Compatible...
    HKP-00304-M
    $59.95
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  • Out Of Stock
    New - H&K HK 93/53/33 (5.56/.223) 30 Round Magazine - Steel - HKP-00484 HK33, HK53, HK93 Magazine - 30 Round - Steel

    HK33, HK53, HK93 Magazine - 30 Round - Steel

    H&K Heckler & Koch

    $72.95
    HK93, HK33, & HK53 - 30 Round Magazine  HK Factory German. All-steel latest production magazine and hard to find. This magazine was discontinued in 2021 and is no longer in production. Stock up as we have the last remaining units available...
    HKP-00484
    $72.95
    Out Of Stock
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  • New - H&K, Walther 10 Round HK MP5 .22LR Magazine - Black - HKP-19923 HK MP5 .22LR Magazine - 10 Round - Walther
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    HK MP5 .22LR Magazine - 10 Round - Walther

    H&K Hechler & Koch / Walther

    $39.95
    HK MP5 22 - 10 Round magazine Brand new Walther/HK German manufactured for the HK MP5-A5 & MP5SD .22 rifle & Pistols. Each magazine offers a 10 round magazine capacity & fits all HK, Walther, Umarex MP5 A5 & MP5SD .22 rifles. A good...
    HKP-19923
    $39.95
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  • On Sale
    New - HKP HK MR556/HK416 FFRS Retaining Spring - HKP-21503
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    HK416, MR556 Retaining Spring - FFRS

    HKP HK Parts

    Now: $3.95
    Was: $4.99
    HKP HK MR556/HK416 FFRS Retaining Spring The retainer spring retains the handguard locking pin on the free floating rail system (FFRS). These can become damaged with the removal of the handguard screws. Once the spring is damaged, they require...
    HKP-21503
    Now: $3.95
    Was: $4.99
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  • New - HKP Vertical Grip - Picatinny Mount - Short - HKP-16409 HKP Vertical Grip - Picatinny Mount - Short HKP HK Parts HKP-16409
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    HK Vertical Foregrip - Short - Picatinny

    HKP HK Parts

    $24.95
    HKP Vertical Grip - Picatinny Mount - Short This grip is by far the nicest shorter style or stubby grip we have encountered for the money. This rock solid grip is a must have for anyone that uses a vertical grip. This is the only vertical grip out there...
    HKP-16409
    $24.95
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    $24.95
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  • On Sale
    New - HKP HK .45 Barrel O-Ring All Caliber Pistols - Red - HKP-19316 HK45, USP, Mark 23 Barrel O-Ring - .45 ACP - Red
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    HK45, USP, Mark 23 Barrel O-Ring - .45 ACP - Red

    HKP HK Parts

    Now: $3.95
    Was: $4.95
    HKP HK .45 Barrel O-Ring All Caliber Pistols - Red A rare find as we have found a small lot of HK red-colored HK .45 O-rings.  All HK O-rings are still made of the same material as the newer black O- rings only in the HK red color. A great spare and...
    HKP-19316
    Now: $3.95
    Was: $4.95
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