HK Rifle / SMG Parts

HK Rifle / SMG Parts

Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!

Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.

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  • New - B&T HK 91/G3 (7.62x51/.308) Low Profile Mount - Extended - HKP-16873 HK91, G3 Optic Mount - 220mm - Low Profile - Extended Picatinny Rail
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    HK91, G3 Optic Mount - 220mm - Low Profile - Extended Picatinny Rail

    B&T Brugger & Thomet

    $199.95
    B&T Mounting Rail Low Profile Mount for HK G3, Long Extended Version Low profile rail that allows the use of iron sights while installed. Specifications: Color: Black Height max: 30.7 mm Length max: 220 mm Material: Aluminum NATO Accessory Rails:...
    HKP-16873
    $199.95
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    $199.95
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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
    Out Of Stock
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    $99.95
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  • New - MI HK MP5K 1913 End Plate Adapter - HKP-21584 HK MP5K Picatinny End Plate Adapter
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    HK MP5K Picatinny End Plate Adapter

    MI Midwest Industries

    $89.95
    MI HK MP5K 1913 Picatinny End Plate Adapter The Midwest Industries Picatinny end plate adapter opens up a myriad of off-the-shelf stock and brace options. The adapter installs in the same manner as the factory end cap with the factory push pins...
    HKP-21584
    $89.95
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    $89.95
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  • New - H&K HK MR556/MR762/416/417 Detent Takedown Pin - HKP-02540
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    HK416, MR556, HK417, MR762 Detent Takedown Pin

    H&K Heckler & Koch

    $9.95
    Heckler and Koch HK417, HK MR556, HK417, HK MR762 Detent Takedown Pin Factory H&K takedown pin for MR556 A4. Compatible With: HK416, MR556 HK417, MR762
    HKP-02540
    $9.95
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    $9.95
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  • On Sale
    New - AC-Unity HK MP5 Wide Handguard - HKP-21637 HK MP5 Handguard - Wide
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    HK MP5 Handguard - Wide

    AC-Unity

    Now: $14.45
    Was: $18.95
    AC-Unity HK MP5 Wide Handguard Made by AC-Unity with advanced, German made polymer-resin/granulate that is both lightweight and shock/UV resistant. This state of the art polymer is formulated to withstand temperatures from -30°C to 120°C...
    HKP-21637
    Now: $14.45
    Was: $18.95
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    Now: $14.45
    Was: $18.95
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  • Used - H&K HK21 FMP Parts Kit, 7.62x51 - HKP-21393 HK21 FMP Parts Kit, 7.62x51
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    HK21 FMP Parts Kit, 7.62x51

    FMP HK CONTRACT

    $1,938.95
    H&K HK21 FMP Parts Kit, 7.62x51 Seize your opportunity to secure a piece of history!  These HK21 parts kits were manufactured by the Portuguese government under license from HK using HK's tooling, dies, and prints. Each HK21 kit has been...
    HKP-21393
    $1,938.95
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    $1,938.95
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  • New - H&K HK MR762/417/G28 Slim Line Retractable Stock - Black - HKP-17135 HK417,  MR762, G28 Slim Line Retractable Buttstock
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    HK417, MR762, G28 Slim Line Retractable Buttstock

    H&K Heckler & Koch

    $86.95
    H&K HK MR762/417/G28 Slim Line Retractable Stock 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-17135
    $86.95
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    $86.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Side or Bottom Rail - HKP-00597 HK UMP, USC Handguard Rail - Side or Bottom
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    HK UMP, USC Handguard Rail - Side or Bottom

    H&K Heckler & Koch

    $67.95
    HK Heckler and Koch Factory German Side or Bottom Rail with Screws HK USC and HK UMP Up to three sides can be used - two for the sides and one for the bottom. Best quality and price available anywhere. Made from hard coat anodized aluminum. Please Note:...
    HKP-00597
    $67.95
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  • New - HDPS HK UMP/USC (.45 ACP) Flanged Barrel - 8" - HKP-02130
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    HK UMP, USC Barrel - Flanged - .45 ACP - 8"

    HDPS

    $329.95
    HDPS HK UMP 45 ACP 8 Inch Barrel - Flanged HDPS UMP barrels are perfect for the USC to UMP conversions and for a replacement UMP .45 barrel.  Each barrel is an exact reproduction with all HK German specs. As a bonus, this item counts as 1 of the 3...
    HKP-02130
    $329.95
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    $329.95
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  • Used - H&K 91/G3 (7.62x51/.308) Complete F/A Trigger Pack (SEF) - Used - HKP-00522 HK91, G3 Trigger Pack, Complete - SEF Full Auto - Used Surplus
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    HK91, G3 Trigger Pack, Complete - SEF Full Auto - Used Surplus

    H&K Heckler & Koch

    $299.95
    Heckler and Koch SEF Complete Full Auto Trigger Pack - USED for HK G3 and HK91 7.62x51 / .308 A Heckler and Koch genuine part. The best price anywhere for a complete surplus German trigger pack. This offering is a full auto HK SEF .308 trigger pack...
    HKP-00522
    $299.95
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    $299.95
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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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  • On Sale
    New - MKE HK MP5 Hammer Spring - HKP-22224 MKE HK MP5 Hammer Spring MKE HKP-22224
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    HK MP5, MP5K Hammer Spring - 9mm - US

    MKE

    Now: $3.89
    Was: $5.89
    MKE MP5/MP5K, AP5 Hammer Spring MKE MP5/AP5 replacement hammer spring.  Worn hammer springs can cause light primer strikes and misfires.  A great part to load up on for years of trouble free shooting. Crafted per HK specifications by MKE...
    HKP-22224
    Now: $3.89
    Was: $5.89
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    Now: $3.89
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