MP5K / SP5K Series

MP5K / SP5K Series

Discover the most comprehensive selection of HK MP5K and SP5K parts at HKP. From bolt carrier groups and barrels to trigger packs and magazines, we provide all the HK parts you need to build, upgrade, or maintain your firearm. Whether you're enhancing your MP5K with 922r compliant parts or looking for the perfect SP5K flash hider, our top-quality components are designed for precision, reliability, and performance. Trust HKP for all your MP5K and SP5K parts and accessories.

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  • New - Franklin Armory HK MP5K-AR Binary Trigger Group - HKP-21337-M HK MP5K, SP5K-PDW, SP89 Binary Trigger Group - Ambi - BFSIII - 9mm
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    HK MP5K, SP5K-PDW, SP89 Binary Trigger Group - Ambi - BFSIII - 9mm

    FA Franklin Armory

    $849.95
    Franklin Armory HK MP5K-AR Binary Trigger Group Introducing our new MP5K-AR Navy ambidextrous lower housing, paired with a Franklin Armory Binary Trigger pack and a Magpul MOE grip for a complete MP5K-AR Binary Trigger group. This drop-in unit fits all...
    $849.95
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  • New - JMAC Universal Picatinny 9" Arm Bar with Brace/Stock Adapter - HKP-21248 Arm Bar and Stock  or Brace Adapter - Picatinny 9"
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    Arm Bar and Stock or Brace Adapter - Picatinny 9"

    JMAC Customs

    $272.85
    JMAC Universal Picatinny 9" Arm Bar with Brace/Stock Adapter (A)rm(B)ar(9)inch(R)ise + AB-BA Brace Adapter + our 1913 Folding Mech (not assembled) Features: Modular Design - Brace/Stock with many mounting options Integrated QD Sling Socket 9"...
    $272.85
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  • New - Blitzkrieg HK MP5 Flat Front Sight Gen 2 - Luminescent Green - HKP-21102 HK MP5 Flat Front Sight - Gen 2 - Luminescent Green
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    HK MP5 Flat Front Sight - Gen 2 - Luminescent Green

    Blitzkrieg Components

    $87.95
    Blitzkrieg HK MP5 Flat Front Sight Gen 2 - Luminescent Green The Blitzkrieg Gen 2 HK-style front sight offers an advanced sighting solution with enhanced precision and visibility. Featuring a conventional flat-tipped post and a bright...
    $87.95
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  • Out Of Stock
    New - Trijicon 90 Series Front & Rear Night Sight Set - HKP-00373 Trijicon 90 Series Front & Rear Night Sight Set

    Trijicon 90 Series Front & Rear Night Sight Set

    Trijicon

    $124.95
    Trijicon 90 Series Front & Rear Night Sight Set Trijicon produces the brightest night sights available for Heckler & Koch sub guns and rifles. These tritium night sight inserts are a no-brainer for quicker, more accurate point-and-shoot...
    $124.95
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  • New - HKP MP5, MP5K Rear Sight Base - Billeted - HKP-18087
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    HK MP5, MP5K Rear Sight Base - Billeted

    HKP HK Parts

    $17.95
    Billeted MP5, MP5K Rear Sight Base - Weldment All steel HK MP5, MP5K billeted rear sight base. The most correct MP5, MP5K rear sight base available. The only billeted factory correct sight base with the factory HK German side axis grooves. If you want...
    $17.95
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  • On Sale
    New - H&K 9mm Thread Protector - Threaded 1/2x32 RH - HKP-00108
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    HK MP5, SP5K, HK94, SP89 Thread Protector - 9mm - 1/2x32 RH

    H&K Heckler & Koch

    Now: $32.95
    Was: $39.95
    H&K 9mm Thread Protector - Threaded 1/2x32 RH A great replacement item for lost or damaged thread protectors & caps. This part is compatible with all factory-spec MP5 Navy or MP5KN barrels. Specifications: Overall Length .610" Threaded 1/2x32...
    Now: $32.95
    Was: $39.95
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  • New - H&K MP5, MP5K Rear Sight Set Complete-Windage Knob - HKP-02532
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    HK MP5, MP5K Rear Sight Set Complete-Windage Knob

    H&K Heckler & Koch

    $129.95
    MP5 & HK94 Rear Sight Set Complete - With Windage Adjustment Knob Each rear sight unit comes with German HK parts, with the only exception being the hand-adjustable windage screw. Each set includes the entire rear sight assembly and hardware set for...
    $129.95
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  • On Sale
    New - MKE HK MP5 Hammer Spring - HKP-22224 MKE HK MP5 Hammer Spring MKE HKP-22224
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    HK MP5, AP5 Hammer Spring

    MKE

    Now: $2.92
    Was: $5.89
    MKE MP5/MP5K, AP5 Hammer Spring MKE MP5/AP5 replacement hammer spring.  Worn hammer springs can cause light primer strikes and misfires.  A great part to load up on for years of trouble free shooting. Crafted per HK specifications by MKE...
    Now: $2.92
    Was: $5.89
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  • Out Of Stock
    New - Strike Industries M-LOK & KeyMod Universal 7 Slot Rail Section - Red - HKP-19188

    M-LOK Rail Section - 7 Slot - KeyMod - Red

    Strike Industries

    $25.95
    Strike Industries M-LOK & KeyMod Universal 7 Slot Rail Section - Red Strike Industries LINK attachment system takes the age old question Key-Mod vs. M-LOK and came up with the ultimate solution, a dual interface design compatible with both M-LOK and...
    $25.95
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  • Used - H&K SP5K Spec Only 9mm SEF Navy Style Housing - Clipped & Pinned - USED - HKP-20064 HK SP5K Spec Only 9mm SEF Navy Style Housing - Clipped & Pinned - USED
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    HK SP5K Spec Only 9mm SEF Navy Style Housing - Clipped & Pinned - USED

    H&K Heckler & Koch

    $149.95
    H&K SP5K Spec Only 9mm SEF Navy Style Housing - Clipped & Pinned - USED Hand-selected for the highest quality, these "like new" H&K SP5K SEF style trigger housings have been meticulously clipped and pinned to fit the correct SP5K style shelf...
    $149.95
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  • New - Choate MP5K/SP89 9mm Steel End Cap W/ Buffer - HKP-00395 HK MP5K, SP89 End Cap with Buffer  - 9mm - Steel
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    HK MP5K, SP89 End Cap with Buffer - 9mm - Steel

    Choate

    $45.95
    MP5K & SP-89 Steel End Cap With Replaceable Rubber Buffer Fits perfectly on all HK MP5K-type builds or projects. All metal construction, so you know it will last. Each unit comes with a sling loop for use with multiple sling types. Compatible...
    $45.95
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  • New - HKP MP5K/SP89/SP5K 9mm Cocking Tube & Support Set - HKP-00184
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    HK MP5K, SP89 Cocking Tube - 9mm - Support Set

    HKP HK Parts

    $129.95
    HKP MP5K/SP89/SP5K 9mm Cocking Tube & Support Set Specifications: Construction: Hard Coated Titanium Color: Matte Black Weight: 1.7 oz. Compatible With: HK MP5K HK SP89 HK SP5K MP5 Reverse stretch builds, clones, or other custom builds
    $129.95
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