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 UMP/USC (.40 S&W/.45 ACP/9mm) Rear Stock Axle Pin - HKP-00604
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    HK UMP, USC Buttstock Axle Pin

    H&K Heckler & Koch

    $30.95
    HK German UMP Rear Stock Axle Pin This is the HK factory German stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those that are doing the USC to UMP conversion. This is required to attach the stock to the...
    HKP-00604
    $30.95
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    $30.95
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  • Out Of Stock
    New - MM HK 33/91/93/G3 5.56/.223 & 7.62x51/.308 Clubfoot With Heavy Rubber Buttpad - HKP-01144 HK33, HK93, HK91, G3 Clubfoot Stock With Heavy Rubber Buttpad

    HK33, HK93, HK91, G3 Clubfoot Stock With Heavy Rubber Buttpad

    Michaels Machines

    $229.95
    US-Made Clubfoot (21E/23E Style) Central Buttstock Section With US Heavy Rubber Buttpad Fits all HK 91/G3/21/23 and HK93/33/53 backplates and buffers. Just add your buffer and backplate and you are good to go. Great replacement or upgrade for your HK...
    HKP-01144
    $229.95
    Out Of Stock
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  • Out Of Stock
    New - B&T HK UMP & B&T APC Folding Stock - HKP-17441-M HK UMP, B&T APC Folding Stock

    HK UMP, B&T APC Folding Stock

    B&T Brugger & Thomet

    $140.00
    B&T Brugger and Thomet Folding Stock for HK UMP and B&T APC   Swiss manufactured B&T APC & UMP Folding stock. (NFA rules apply) Compatible With: UMP .45, .40, & 9mm USC (with UMP conversion) Omega GS offerings in 45, 40, &...
    HKP-17441-M
    $140.00
    Out Of Stock
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    $140.00
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  • New - HKP HK SP5 & SP5K Spec. Clipping & Pinning Service HK Lower Housings Poly - HKP-19989 HK SP5 and SP5K Spec. Clipping and Pinning Service for Polymer Lower Housings
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    HK SP5 and SP5K Spec. Clipping and Pinning Service for Polymer Lower Housings

    HKP HK Parts

    $99.95
    HK Clipped and Pinned Service - For Polymer Grip Frames to SP5 SPEC At HK Parts we offer our own HK trigger housing clip and pin services. No one does a better job with quicker turn around then we do. We will clip and pin any "push pin" plastic housing...
    HKP-19989
    $99.95
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    $99.95
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  • New - HKP 90 Series Sear - HKP-00378 HK90, MP5K Sear Catch - Steel - US
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    HK90, MP5K Sear Catch - Steel - US

    HKP HK Parts

    $47.95
    HKP HK Parts HK90, HK MP5K Sear Catch - Steel - USA Made - Billeted Machined - Steel Hard to find and important for keeping your HK build 922r compliant. This US-made sear counts as one US-compliant part for your rifle or build. Machined from a bar of...
    HKP-00378
    $47.95
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    $47.95
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  • Out Of Stock
    On Sale
    HK MP5, AP5 OEM Picatinny Rail MKE HKP-22335 HK MP5, AP5 OEM Picatinny Rail MKE HKP-22335

    HK MP5, AP5 Optic Mount - Picatinny

    MKE

    Now: $39.95
    Was: $49.95
    MKE HK MP5, AP5 OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5 platform. OEM part for the Century AP5.  Compatible With: HK MP5/SP5 Century Arms AP5 In-spec. clones and custom builds
    HKP-22335
    Now: $39.95
    Was: $49.95
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  • New - H&K HK MR556/416 10.5" Rear Diopter Sight Assembly - HKP-01109
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    HK416, MR556 Rear Diopter Sight Assembly - 10.5"

    H&K Heckler & Koch

    $188.95
    H&K HK MR556/416 10.5" Rear Diopter Sight Assembly This is the proper rear sight for use on all HK 416 10.5 uppers and firearms. This is also a great sight alternative for those who need a lower sight setup for the AR, XCR, etc. To be used in...
    HKP-01109
    $188.95
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    $188.95
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  • New - HKP HK 91 Polymer To Metal Trigger Group Conversion Kit - HKP-17362 HK91 Polymer To Metal Trigger Group Conversion Kit
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    HK91 Polymer To Metal Trigger Group Conversion Kit

    HKP HK Parts

    $225.95
    HK 91/PTR 91 Polymer To Metal Trigger Group Conversion Kit. This is everything you will need to convert the lower trigger group on your HK 91 from polymer to metal housing with contoured grip. Just use your existing trigger pack to complete the...
    HKP-17362
    $225.95
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    $225.95
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  • New - Cartridge Case Deflector, Shell Deflector - MP5, MP5K - Billet - HKP-17574
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    HK MP5, MP5K Cartridge Case Deflector, Shell Deflector - Billet

    HKP HK Parts

    $19.95
    Cartridge Case Deflector, Shell Deflector - MP5, MP5K - Billet New US made case deflector for receiver flat or receiver for all MP5, HK94, MP5K, & SP89 builds. The case deflector is riveted or welded in place on the ejection port of the 9mm receiver...
    HKP-17574
    $19.95
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    $19.95
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  • New - MI HK MP5K, HK SP89 Top Rail - Black - HKP-19113 HK MP5K, HK SP89 Top Rail
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    HK MP5K, HK SP89 Top Rail

    MI Midwest Industries

    $129.95
    MI HK MP5K, HK SP89 Top Rail Midwest Industries picatinny and M-lok top rail for MP5, HK94 style weapons and clones. An amazing profile option for your MP5 style weapon. Offers a combination of strength, adaptability and extreme lightweight features...
    HKP-19113
    $129.95
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  • New - HKP 9mm US Made Trigger Pack - 4 U.S. 922 Parts - HKP-17878 HK MP5 Trigger Pack - Semi Auto - 9mm - 922r
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    HK MP5 Trigger Pack - Semi Auto - 9mm - 922r

    HKP HK Parts

    $269.95
    Trigger Pack For MP5, HK94 Variants Such as Zenith, POF- 4 US 922r Compliant Parts HK MP5, HK94 9mm Semi Auto Trigger Pack complete. Each Trigger group incorporates the following US made compliant parts completely assembled & ready to drop in. The...
    HKP-17878
    $269.95
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    $269.95
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  • New - AIM HK 91/G3 (7.62x51/.308) Extended Rifle Length Handguard - M-LOK - HKP-18173 HK91, G3 Extended Rifle Length Handguard - M-LOK
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    HK91, G3 Extended Rifle Length Handguard - M-LOK

    AIM

    $129.95
    HK G3 EXTENDED RIFLE LENGTH HANDGUARD- M-LOK The most innovative and modular HK variant handguard on the market, our M-LOK HK forend can be used with all modern and traditional shooting techniques. CNC machined aluminum construction makes for a solid,...
    HKP-18173
    $129.95
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