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 HK 416/MR556 9" Quad Rail - HKP-16858 HK416, MR556 9" Quad Rail

    HK416, MR556 9" Quad Rail

    H&K Heckler & Koch

    $419.95
    H&K HK 416/MR556 9" Quad Rail HK German 416, MR556 Quad Rail without mounting screw. Specifications: Length: 9 1/4" Color: charcoal gray Compatible With: HK MR556 HK 416
    HKP-16858
    $419.95
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    $419.95
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  • New - H&K HK MR556/416 Extractor Axle Pin - HKP-00040
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    HK416, MR556 Extractor Axle Pin

    H&K Heckler & Koch

    $11.95
    HK MR556 & 416 Extractor Axle Pin This factory HK German part holds the extractor in place on the bolt head. This item needs to be changed each time it is removed per HK. Compatible With: HK MR556 HK 416 M27 HK 416 A5  
    HKP-00040
    $11.95
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  • New - H&K HK MR556/416 Handguard Rail System Screw - HKP-02717 HK416, MR556, HK417, MR762 Handguard Locking Screw - A1 Style
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    HK416, MR556, HK417, MR762 Handguard Locking Screw - A1 Style

    H&K Heckler & Koch

    $24.95
    Heckler and Koch A1 Handguard Rail System Screw for HK416, HK MR556, HK417, and HK MR762 Factory HK handguard rail screw for A1 handguards.   Compatible With: HK416 A1, MR556 A1 HK417 A1, MR762 A1 (2 required per handguard)
    HKP-02717
    $24.95
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  • New - GSG9 HK G36 (5.56/.223) Incomplete Bolt Head - HKP-00802 HK G36 Bolt Head, Incomplete
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    HK G36 Bolt Head, Incomplete

    GSG9

    $225.95
    G36 Incomplete Bolt Head - USA G36 bolt head allows the use of double stack magazines in your SL8 conversion to high-capacity G36, Magpul, or AR15 magazines.   
    HKP-00802
    $225.95
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    $225.95
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  • New - HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style - HKP-15731
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    HK UMP, USC Stock Block B Thumb Screw

    HDPS

    $74.95
    HDPS HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin-Thumb Screw Style The original thumb screw version for all stock block B's.
    HKP-15731
    $74.95
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  • Out Of Stock
    New - H&K MP5 40/10 Chamber Flute Brush - HKP-00139

    HK MP5 Barrel Chamber Flute Cleaning Brush - .40 S&W, 10mm

    H&K Heckler & Koch

    $29.95
    New HK German MP5 40, MP5 10mm Chamber Flute Brush This is a must-have brush to keep the flute clean and the firearm running the way it should. Get this item while you can, it is no longer in production and is hard to find. Compatible With: MP5 40 MP5...
    HKP-00139
    $29.95
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  • New - HKP MP5SD 9mm Front End Kit - HKP-02399
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    HK MP5SD 9mm Front End Kit

    HKP HK Parts

    $1,199.95
    HK MP5SD Front End Build Kit  The HK Parts MP5SD front end kit includes everything required (except suppressor) to build an MP5SD front end including the best US and German components available. Each kit counts as 4 922r USA-made parts toward the...
    HKP-02399
    $1,199.95
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    $1,199.95
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  • Out Of Stock
    New - Ergo Tactical Grip For MR556/MR762-Black - HKP-17131 Ergo Tactical Grip For MR556/MR762-Black Ergo HKP-17131

    HK416, MR556, HK417, MR762 Tactical Grip

    Ergo

    $54.95
    Ergo Grip PSG1 Style Grip For MR556 & MR762 Just in and a great upgrade if you want the PSG1 style grip frame for your HK MR556, MR762 & HK416, HK417, G28 firearm. The ergonomically enhanced ERGO Tactical Deluxe Grips fits all AR15, M16 and MR...
    HKP-17131
    $54.95
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  • HK416, MR556, HK417, MR762 Selector Lever - Ambi - Right
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    HK416, MR556, HK417, MR762 Selector Lever - Ambi - Right

    H&K Heckler & Koch

    $11.95
    Heckler & Koch HK416 Ambi Safety Selector Lever Factory HK polymer right side selector lever. Compatible With: HK416 A1/A3 HK MR556 A1 HK417 HK MR762 A1
    HKP-22309
    $11.95
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  • Out Of Stock
    HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284 HK MP5 Barrel Retaining Pin - 5.015mm H&K Heckler & Koch HKP-22284

    HK MP5 Barrel Retaining Pin - 5.015mm

    H&K Heckler & Koch

    $14.95
    H&K 90 Series Barrel Retaining Pin - 5.015mm Each barrel pin is used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel.  Compatible With:  HK MP5, SP5, MP5K,...
    HKP-22284
    $14.95
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  • On Sale
    New - MKE HK MP5 Elbow Spring for Trigger - HKP-22225 MKE HK MP5 Elbow Spring for Trigger MKE HKP-22225
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    HK MP5, HK90 Series Trigger Spring - SEF, Navy

    MKE

    Now: $2.45
    Was: $8.95
    MKE SEF & Navy 3 Position Trigger Spring The MKE trigger spring is an essential upgrade for anyone dealing with worn or broken trigger return springs in surplus trigger packs or as spares for all 90 series owners. These springs are fully compatible...
    HKP-22225
    Now: $2.45
    Was: $8.95
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    Now: $2.45
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  • New - HKP Torx Binary Upgrade Screw Set - HKP-21816
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    HK Torx Screw Set for Binary Selector Lever - Upgrade

    HKP HK Parts

    $2.95
    HKP Torx Binary Upgrade Screw Set Upgrade your binary selector levers with our Torx hardware set.  Torx hardware is less likely to strip than standard allen key hardware.  Good spares to have on hand as well. Note: Each set comes with 2 screws.
    HKP-21816
    $2.95
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