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 & 93/53/33 (9mm & 5.56/.223) SEF Navy Style Polymer Housing - Push Pin - HKP-02462 HK MP5, HK33, HK53, HK93 Trigger Housing - SEF Navy - Polymer - Push Pin - 9mm, 5.56 / .223
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    HK MP5, HK33, HK53, HK93 Trigger Housing - SEF Navy - Polymer - Push Pin - 9mm, 5.56 / .223

    H&K Heckler & Koch

    $129.95
    H&K MP5 & 93/53/33 (9mm & 5.56/.223) SEF Navy Style Polymer Housing - Push Pin Upgrade your older SEF contoured trigger pack with this Navy Style polymer housing, designed to enhance the look and feel of your HK firearm. Specifications: Push...
    HKP-02462
    $129.95
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    $129.95
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  • HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1 HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1
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    HK91, G3 Barrel - FMP - 17.7" - Threaded 15x1

    FMP HK CONTRACT

    $89.95
    HK G3, 91 Barrel - 7.62/.308 - 17.7" - Threaded 15x1 Original 17.7" FMP G3 barrel threaded 15x1 RH. Portuguese manufactured to HK's military specifications. These surplus barrels are perfect for building a FMP G3 parts kit or as a replacement. Barrels...
    HKP-22532
    $89.95
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    $89.95
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  • New - Franklin Armory HK MP5K - BFSIII HK-C1 Binary SEF Navy Style Trigger Group - HKP-20928-M
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    HK MP5K, SP5K Binary Trigger Group - SEF Navy - BFSIII - 9mm

    FA Franklin Armory

    $879.95
    Franklin Armory HK MP5K - BFSIII HK-C1 Binary SEF Navy Style Trigger Group In position 3 it will fire 1 round on pull and 1 round on release. With a 4.5 lb trigger pull, making this the fastest semi-automatic trigger on the market. The BFSIII™ is...
    HKP-20928-M
    $879.95
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    $879.95
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  • New - H&K HK MR556/416 Castle Nut - HKP-15230 HK416, MR556 Buffer Tube Castle Nut
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    HK416, MR556 Buffer Tube Castle Nut

    H&K Heckler & Koch

    $34.95
    Heckler and Koch Castle Nut for Buffer Tube for HK416 and HK MR556 New HK German manufacture. This buffer tube castle nut will fit both mil-spec and commercial buffer tubes. All steel manufacture. With HK round tool attachment points as well as...
    HKP-15230
    $34.95
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    $34.95
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  • New - H&K HK MR556/416 Vented Slimline Gas Block - HKP-02660 HK416, MR556 Gas Block - Slimline - Vented
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    HK416, MR556 Gas Block - Slimline - Vented

    H&K Heckler & Koch

    $145.95
    Heckler and Koch Low Profile Complete Gas Block for HK MR556, HK416, HK German Factory slimline, low-profile gas block for the HK416 and HK MR556. This is the factory-correct gas block found on the MR556. Correct gas block to use with...
    HKP-02660
    $145.95
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    $145.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Recoil Buffer - HKP-00594
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    HK UMP, USC Recoil Buffer

    H&K Heckler & Koch

    $20.95
    HK German USC & UMP Recoil Buffer Replaceable spare lower housing or buffer for buffer housings. This is a high wear and replacement item and a must-have for spare parts. Compatible With: HK USC .45 HK UMP models
    HKP-00594
    $20.95
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    $20.95
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  • Used - H&K MP5K/SP5K SEF Universal Housings - Clipped & Pinned - USED - HKP-21352 HK MP5K, SP5K Trigger Housing - Universal SEF - Clipped and Pinned - USED
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    HK MP5K, SP5K Trigger Housing - Universal SEF - Clipped and Pinned - USED

    H&K Heckler & Koch

    $99.95
    H&K Heckler and Koch SEF Universal Housing Clipped and Pinned - USED for HK MP5K HK SP5K Finally, a solution everyone was looking for. A one size fits all approach for the MP5K and SP5K style semi-auto shelf. You can easily swap the lower trigger...
    HKP-21352
    $99.95
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    $99.95
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  • New - B&T GHM9 Telescoping Brace/Stock Adapter - Black - HKP-18946 B&T GHM9 Stock or Brace Adapter - Telescopic
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    B&T GHM9 Stock or Brace Adapter - Telescopic

    B&T Brugger & Thomet

    $510.00
    B&T GHM9 Telescopic Brace/Stock Adapter Switzerland manufactured telescopic brace adaptor for Gearhead Works Tailhook MOD 1. Tailhook is not included. ***Stabilizing braces sold by HK Parts are designed and intended for the exclusive application as a...
    HKP-18946
    $510.00
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    $510.00
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  • New - H&K HK MR556/MR762/416/417 Tactical Sling - Black - HKP-00028 HK416, MR556 Sling - Tactical - Black
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    HK416, MR556 Sling - Tactical - Black

    H&K Heckler & Koch

    $109.95
    H&K HK MR556/MR762/416/417 Tactical Sling - Black OEM HK German part. The tool is built into the HK sling hook. For the MR556 model, a sling adapter will be needed for the front attachment point as the MR556 lacks the ambi sling loop on the gas...
    HKP-00028
    $109.95
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    $109.95
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  • New - H&K 91/G3 (7.62x51/.308) Enhanced Trigger Pack - Match - HKP-17014 HK91, G3 Enhanced Trigger Pack - Match
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    HK91, G3 Enhanced Trigger Pack - Match

    H&K Heckler & Koch

    $439.95
    H&K 91/G3 (7.62x51 / .308) Enhanced Trigger Pack - Match Each HK German semi-auto trigger pack has been carefully converted from the factory 12lb pull to a match-weight of 5-6lbs by the renowned HK trigger-smith, Bill Springfield.  The result, a...
    HKP-17014
    $439.95
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    $439.95
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  • On Sale
    New - HKP MP5 40/10 Receiver Flat - HKP-00767 HK MP5 Receiver Flat - .40 S&W, 10mm
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    HK MP5 Receiver Flat - .40 S&W, 10mm

    HKP HK Parts

    Now: $194.95
    Was: $399.95
    MP5 40 & MP5 10mm Receiver Flat - USA The new and latest production with the weldment locations is already lasered and ready to go. This flat is the finest available for the MP5 40/10 family of firearms. Compatible With: MP5 .40 Cal MP5 10mm MP5 ...
    HKP-00767
    Now: $194.95
    Was: $399.95
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    Now: $194.95
    Was: $399.95
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  • Used - H&K MP5 Factory Ambidextrous Sling - Black - HKP-00350 HK MP5, G36, UMP Sling - Factory - Ambidextrous - Black
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    HK MP5, G36, UMP Sling - Factory - Ambidextrous - Black

    H&K Heckler & Koch

    $64.95
    Heckler and Koch Ambidextrous 25mm Wide Sling for HK MP5, G36, UMP - Black Ambidextrous 25mm wide black sling designed for HK platforms equipped with dual sling clip attachment points. Allows left or right side mounting similar to the factory HK green...
    HKP-00350
    $64.95
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    $64.95
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