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 - HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block - B Pin Style - HKP-00773 HK UMP, USC Stock Block B - Push Pin Style
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    HK UMP, USC Stock Block B - Push Pin Style

    HDPS

    $209.95
    New Latest Production HDPS HK USC/UMP Stock Block -B Pin Style For use with all HK UMP factory or US-made folding stocks. Each unit comes with a new push-pin design. This is a required part of the HK USC-UMP style conversion. Each part is the latest...
    HKP-00773
    $209.95
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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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  • 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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  • New - HKP Enhanced Ambi Selector Set - Contoured SEF - HKP-18257 HK Selector Set - Enhanced Ambi - Contoured SEF
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    HK Selector Set - Enhanced Ambi - Contoured SEF

    HKP HK Parts

    $74.95
    Ambidextrous Selector Lever Set For Contoured SEF Polymer Grip Frames   Features: Billet machined enhanced left & right side selector lever set Latest HK style titanium detent, enhanced spring for positive movement between...
    HKP-18257
    $74.95
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  • Used - H&K 90 Series Trigger-Used - HKP-17920
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    HK90 Series Trigger - Used

    H&K Heckler & Koch

    $14.95
    H&K 90 Series Trigger-Used German 90 series surplus trigger in used condition taken from demilled HK German G3 firearms. Compatible With: HK91, G3, PTR HK93, 33, 53 HK MP5, 94, Zenith, POF, MKE Clone or other custom builds
    HKP-17920
    $14.95
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  • New - H&K Soft Case 42" Single Rifle Case - Black - HKP-20228 HK Soft Case 42" Single Rifle Case - Black
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    HK Soft Case 42" Single Rifle Case - Black

    H&K Heckler & Koch

    $129.95
    H&K Soft Case 42" Single Rifle Case - Black Protects 42" rifles and shorter with dense padding and durable water resistant PET shell material. Velcro wraparound handle to combine carrying handles. Large zippered storage compartment. Compatible...
    HKP-20228
    $129.95
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  • New - German HK 416, MR556 - Barrel Nut - HKP-02535 HK416 A1, MR556 Barrel Nut
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    HK416 A1, MR556 Barrel Nut

    H&K Heckler & Koch

    $53.95
    Heckler and Koch Barrel nut for MR556A1 rifle All steel barrel nut. This item is a must-have repair and replacement part for removal or when you have any work done to your barrel, as the barrel nut may become damaged in the removal and...
    HKP-02535
    $53.95
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  • New - HKP 9mm A2 Style Flash Hider - 3-Lug - HKP-19520 HK MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm
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    HK MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm

    HKP HK Parts

    $99.95
    MP5, MP5K Flash Hider - A2 Style - 3-Lug - 9mm Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels...
    HKP-19520
    $99.95
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  • Used - H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT - HKP-18335 HK91, G3 SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT
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    HK91, G3 SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT

    H&K Heckler & Koch

    $49.95
    H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Push Pin - USED EXELLENT German made Heckler & Koch grip housing comes in black polymer. Accepts standard SEF or 0,1 style trigger packs & SEF longer axled selector levers. Priced to...
    HKP-18335
    $49.95
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  • New - UTG PRO HK MP5 M-LOK Handguard - Extended Length - HKP-21673 HK MP5 Handguard - M-LOK - Extended Length
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    HK MP5 Handguard - M-LOK - Extended Length

    UTG PRO

    $197.95 - $245.95
    UTG HK MP5 PRO Monolithic M-LOK Handguard - Extended Length   The UTG PRO extended monolithic M-LOK handguard builds on the original with added real estate out front for mounting accessories.  Where the original stops before the front sight,...
    HKP-21673-M
    $197.95 - $245.95
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  • Out Of Stock
    New - HKP, H&K 19 Round HK Mark 23 / USP .45 ACP Complete Magazine - Black - HKP-21586 HK Mark 23, USP Magazine with Extension, Complete - 19 Round - .45 ACP

    HK Mark 23, USP Magazine with Extension, Complete - 19 Round - .45 ACP

    HKP HK Parts / Heckler & Koch

    $109.95
    HKP HK Parts and Heckler and Koch Magazine Extension Complete 19 Round - HK Mark 23 and USP .45 Designed specifically for the Mark 23 and USP .45—perfect for those who want extra firepower at the range. Each magazine comes fully assembled and ready...
    HKP-21586
    $109.95
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  • New - H&K Sling Hardware - HKP-19367 HK Sling Hardware
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    HK Sling Hardware

    H&K Heckler & Koch

    $4.95
    HK German Sling Hardware New Old Stock Slider and sling tension adjuster for HK style slings and other sling applications. Steel manufacture. 
    HKP-19367
    $4.95
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