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 - H&K MP5 40/10 -2 Roller - HKP-00336 HK MP5 Locking Roller -2 - .40 S&W, 10mm
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    HK MP5 Locking Roller -2 - .40 S&W, 10mm

    H&K Heckler & Koch

    $19.95
    H&K Heckler and Koch -2 roller HK German for HK MP5 40/10  Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production.  Please Note: The price listed is per...
    HKP-00336
    $19.95
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  • New - HKP HK MP5 .40 S&W Barrel - Threaded 9/16x24 - 3-Lug - HKP-16402 HK MP5 Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug
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    HK MP5 Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug

    HKP HK Parts

    $249.95
    HKP HK MP5 .40 S&W Barrel - Threaded 9/16x24 - 3-Lug Newly manufactured US Made MP5 .40 S&W barrel that is 3-lugged and threaded with matching thread protector. This is a barrel offering that is made to the highest standards and tolerances and...
    HKP-16402
    $249.95
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  • HK MP5K, SP89 Handguard - Low-Profile HK MP5K, SP89 Handguard - Low-Profile
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    HK MP5K, SP89 Handguard - Low-Profile

    PTR

    $62.95
    PTR HK MP5K, SP89 9mm Tactical Low-Profile Handguard The modular tactical forearm from PTR accommodates 2" rails on either site or bottom for mounting accessories.  Made from aircraft-grade aluminum and steel components. The handguard also boasts...
    HKP-14539-M
    $62.95
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    $62.95
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  • New - H&K MP5K/SP89/SP5K 9mm Key Mod Handguard - HKP-17177 HK MP5K, SP89, SP5K Handguard - KeyMod
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    HK MP5K, SP89, SP5K Handguard - KeyMod

    HKP HK Parts

    $89.95
    HK MP5K, SP89 Low Profile Forearm KEYMOD The Key MOD tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by roller lock & HK enthusiasts with your shooting needs...
    HKP-17177
    $89.95
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  • New - B&T HK MP5 9mm Barrel - Threaded 1/2x32 - 3-Lug - HKP-17956 HK MP5 Barrel - 9mm - Threaded 1/2x32 with 3 Lug
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    HK MP5 Barrel - 9mm - Threaded 1/2x32 with 3 Lug

    B&T Brugger & Thomet

    $449.95
    B&T HK MP5 9mm Barrel - Threaded 1/2x32 - 3-Lug New from B&T Switzerland, this cold hammer-forged (CHF) and nitrided barrel is manufactured to exact HK factory specifications exclusively for MP5 models. B&T, a trusted partner of H&K...
    HKP-17956
    $449.95
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    $449.95
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  • New - B&T MP5SD QD Brass Catcher - HKP-18099 HK MP5SD Brass Catcher - Quick Detach
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    HK MP5SD Brass Catcher - Quick Detach

    B&T Brugger & Thomet

    $210.00
    B&T MP5SD Brass Catcher For Use With B&T Handguard     The B&T brass catcher for the MP5SD locks into perfect position when mounted to the matched B&T's HK MP5SD Tri-Rail Handguard. Features a quick disconnect mechanism for easy...
    HKP-18099
    $210.00
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    $210.00
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  • HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter
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    HK416, MR556 C.A.R.L. - 2, 3, or 6 Round Interchangeable Cam Limiter

    AS Designs

    $55.00
    ST Inc Limiter Cam for HK416, MR556 ARC-Fire CARL Lever - 2, 3, and 6 Round Options Limiter cam for the ST Inc CARL lever used with the HK416 and MR556 ARC-Fire trigger setup. Available in 2, 3, and 6 round configurations, each cam changes the CARL reset...
    HKP-22565-M
    $55.00
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  • HK G3, HK33, HK93 Bayonet w/Scabbard - NOS H&K Heckler & Koch HKP-22366 HK G3, HK33, HK93 Bayonet w/Scabbard - NOS H&K Heckler & Koch HKP-22366
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    HK G3, HK33, HK93 Bayonet with Scabbard - NOS

    H&K Heckler & Koch

    $227.95
    HK G3, HK33, HK93 Bayonet with Scabbard - New Old Stock Genuine German HK military surplus bayonet in original wrap. These are the 12-groove version of the popular military bayonet.  Scabbard is included. Compatible With: HK G3 HK91 HK33 HK93
    HKP-22366
    $227.95
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  • HK MP5 Folding Stock or Brace - HDA3 HK MP5 Folding Stock or Brace - HDA3
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    HK MP5 Folding Stock or Brace - HDA3

    Haga Defense

    $349.95
    HDA3 Stock and Brace System for HK MP5, SP5 The HDA3 is a modular, USA-made stock and brace system developed by Haga Defense and A3 Industries. Built for strength, adaptability, and cross-platform compatibility, it delivers premium rigidity, smooth...
    HKP-22354-M
    $349.95
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  • HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny
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    HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny

    F5 MFG

    $324.95
    HK MP5K, SP5K ACR Folding Stock w/Adapter - Picatinny The HKP picatinny end cap with the F5 ACR stock allows users to easily swap this, and other stocks, between their K and other platforms.  This drop-in ready assembly attaches with the K's two...
    HKP-22351-M
    $324.95
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  • HK MP5, MP5K Barrel Flute Cleaning Brush - .40 S&W, 10mm HK MP5, MP5K Barrel Flute Cleaning Brush - .40 S&W, 10mm
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    HK MP5, MP5K Barrel Flute Cleaning Brush - .40 S&W, 10mm

    HKP HK Parts

    $24.95
    HKP HK Parts Cleaning Brush - Barrel Flute - 10mm / .40 S&W This is a must-have brush to keep the flute clean and the firearm running the way it should.  Compatible With: MP5 10mm and .40 S&W MP5K 10mm and .40 S&W
    HKP-22318
    $24.95
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  • Used - HK90 Series F/A Trigger Box - SEF- USED - HKP-22156 HK MP5, HK90 Series Trigger Box - Full Auto SEF - USED
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    HK MP5, HK90 Series Trigger Box - Full Auto SEF - USED

    H&K Heckler & Koch

    $89.95
    Heckler and Koch USED Full Auto SEF Trigger Box for the HK90 Series UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Used genuine HK full-auto trigger box for HK90 series firearms. Controls fire selector function and houses fire control...
    HKP-22156
    $89.95
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    $89.95
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