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 MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group - HKP-00405 HK MP5K Trigger Group - Ambi Navy 3 Position 0,1,F
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    HK MP5K Trigger Group - Ambi Navy 3 Position 0,1,F

    H&K Heckler & Koch

    $2,499.95
    HK MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group HK German MP5K 3 Position 0,1,F Navy Ambidextrous Trigger Group For MP5K, MP5KN or MP5K PDW. New HK German manufacture. This is the real deal. Only a few on hand and once they are all gone there...
    HKP-00405
    $2,499.95
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    $2,499.95
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  • New - H&K MP5 A3 Retractable Buttstock Release Lever - HKP-16404 HK MP5 A3 Retractable Buttstock Release Lever
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    HK MP5 A3 Retractable Buttstock Release Lever

    H&K Heckler & Koch

    $19.95
    HK MP5 A3 Retractable Buttstock Release Lever For use with the newer Navy or F style A3 retractable MP5 stocks. Not for use on the older 1st generation metal levered MP5 stocks. This lever is much easier to break than the older style and a must have item...
    HKP-16404
    $19.95
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    $19.95
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  • New - H&K MP5 A3 Rear Stock Fork Section With Buttpad - HKP-01044
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    HK MP5 A3 Buttstock Fork Section with Buttpad

    H&K Heckler & Koch

    $429.95
    H&K MP5 A3 Stock Fork Section With Buttpad A common repair item as the buttpad can crack or break off with time or hard use. A hard-to-find item, available here at HK Parts. For use with new style A3 German stocks, NOT the older style stocks...
    HKP-01044
    $429.95
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    $429.95
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  • On Sale
    New - Ergo Harris Bipod Mount - KeyMod Handguard - HKP-17874
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    Harris Bipod Mount - KeyMod Handguard

    Ergo

    Now: $9.95
    Was: $38.95
    Ergo Harris Bipod Mount - KeyMod Handguard   Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipods
    HKP-17874
    Now: $9.95
    Was: $38.95
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    Now: $9.95
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  • On Sale
    New - Franklin Armory CZ Scorpion - BFSIII - Binary Trigger - Curved - HKP-18881 CZ Scorpion Binary Trigger - Curved - BFSIII
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    CZ Scorpion Binary Trigger - Curved - BFSIII

    FA Franklin Armory

    Now: $449.99
    Was: $495.95
    Franklin Armory CZ Scorpion - BFSIII - Binary Trigger The BFSIII for CZ Scorpion is a 3-Position Trigger. In position 3 it will fire 1 round on Pull and 1 round on Release. This makes it the fastest semi-automatic trigger on the market. The BFSIII is...
    HKP-18881
    Now: $449.99
    Was: $495.95
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    Now: $449.99
    Was: $495.95
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  • New - HKP ACE Adapter for HK MP5, 93, 33 - HKP-18504 HK MP5, HK33, HK93 Stock or Brace Adapter - ACE Style
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    HK MP5, HK33, HK93 Stock or Brace Adapter - ACE Style

    HKP HK Parts

    $99.95
    ACE Adapter for HK MP5 and HK 93 Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive firearm. This is the finest ACE adapter available period...
    HKP-18504
    $99.95
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    $99.95
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  • On Sale
    HK MP5 Magazine Catch - Turkish Contract - Seconds
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    HK MP5 Magazine Catch - Turkish Contract - Seconds

    Other

    Now: $9.95
    Was: $19.95
    Turkish Contract Magazine Catch for HK MP5 9mm - Seconds Turkish contract raw magazine catch for the MP5. This part is ideal for replacement, restoration, or custom fitment work on compatible builds. Specifications: Seconds Fitting may be...
    HKP-99485
    Now: $9.95
    Was: $19.95
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    Now: $9.95
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  • Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH
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    Muzzle Brake - 5.56 and .308 - Threaded 5/8x24 RH

    HKP HK Parts

    $29.95
    HKP muzzle brake threaded 5/8x24 RH for 5.56/.223 and 7.62x51/.308 firearms This HKP muzzle brake is manufactured in the USA to HK specifications and is designed for use on 5.56 and .308 rifles. It features a partially milled birdcage-style design...
    HKP-22508
    $29.95
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    $29.95
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  • HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1 HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1
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    HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1

    RCM

    $174.95
    HK MP5KSD Barrel - 9mm - 4.89″- Threaded 18x1 The RCM HK Style MP5 SD-K Barrel measures 4.890 inches in length and is constructed from 41v50 cold hammer-forged steel. It features a salt bath nitride finish throughout. This barrel is designed based...
    HKP-22493
    $174.95
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    $174.95
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  • HK MP5K, AP5-P Housing - Contoured - 0, 1 HK MP5K, AP5-P Housing - Contoured - 0, 1
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    HK MP5K, AP5-P Housing - Contoured - 0, 1

    MKE

    $169.95 - $179.95
    MKE Contoured 0, 1 Housing for HK MP5K and MKE AP5-P This contoured 0, 1 (safe/fire) trigger housing is for HK MP5K-pattern firearms and is manufactured in Turkey. Compatible With: MP5K MKE AP5-P, AP5-M In-spec clones and custom builds
    HKP-22468-M
    $169.95 - $179.95
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  • HK MR556 A4 Hammer - Incomplete - Semi-Auto HK MR556 A4 Hammer - Incomplete - Semi-Auto
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    HK MR556 A4 Hammer - Incomplete - Semi-Auto

    H&K Heckler & Koch

    $43.95
    Heckler and Koch Hammer for HK MR556 Semi-Auto rifles Factory-original German steel hammer for MR556 A4 rifles. Designed as a direct replacement for worn or damaged hammers in MR556 A1 and A4 trigger assemblies. Compatible With: MR556A1 MR556...
    HKP-22384
    $43.95
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    $43.95
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  • On Sale
    HK416, MR556 Handguard - 12.5" - M-LOK HK416, MR556 Handguard - 12.5" - M-LOK H&K Heckler & Koch HKP-22342
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    HK416, MR556 Handguard - 12.5" - M-LOK

    H&K Heckler & Koch

    Now: $170.95
    Was: $189.95
    H&K HK MR556/HK416 12.5" M-LOK Compatible Handguard Manufactured by HK from aircraft grade aluminum, this M-LOK handguard is designed for the Heckler & Koch MR556 & HK 416 rifles. This handguard showcases a 12.5" length and includes a...
    HKP-99321
    Now: $170.95
    Was: $189.95
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    Now: $170.95
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