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 - HKP MP5K/SP89/SP5K 9mm AR Brace/Stock Adapter - QD Sling Attachment - HKP-18796 HK MP5K, SP89, SP5K Stock or Brace Adapter - AR - QD Sling Attachment - 9mm
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    HK MP5K, SP89, SP5K Stock or Brace Adapter - AR - QD Sling Attachment - 9mm

    HKP HK Parts

    $114.95
    HKP MP5K/SP89/SP5K 9mm AR Brace/Stock Adapter - QD Sling Attachment Each AR stock, brace adapter is made from a solid billet of CNC machined aircraft grade aluminum with QD Sling Attachment Points. Properly buffered with factory correct "H" buffers to...
    $114.95
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    New - H&K Navy Extended Selector Lever - 3 Position - HKP-00125 H&K Navy Extended Selector Lever - 3 Position H&K Heckler & Koch HKP-00125

    HK Navy Extended Selector Lever - 3 Position

    H&K Heckler & Koch

    $199.95
    HK Ambidextrous Left Side EXTENDED (ESSL) 3 Position Navy Selector Lever  New German HK Extended lever for all 3 position navy ambidextrous trigger packs or trigger groups. It will not fit SEF-style trigger packs.   
    $199.95
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    $199.95
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  • Used - HKP - MP5K, SP89 Receiver Flat With Weldment Set - HKP-20882
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    HK MP5K, SP89 Receiver Flat with Weldment Set

    HKP HK Parts

    $239.95
    HKP - MP5K, SP89 Receiver Flat With Weldment Set New MP5K receiver flat and weldment set combined for the best complete build option on the market. Made by the original German tool and die maker of the LSC receiver flat utilizing factory original German...
    $239.95
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    $239.95
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  • New - H&K HK MR556/416 A5 Ambi Selector Lever Set Complete - Black - HKP-19375 HK416A5, MR556 Ambi Selector Lever Set Complete
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    HK416A5, MR556 Ambi Selector Lever Set Complete

    H&K Heckler & Koch

    $179.95
    H&K HK MR556/416 A5 Ambi Selector Lever Set Complete New HK German manufacture. Complete kit to upgrade the selector lever set on the MR556 to the newer HK 416A5 semi style of levers. A drop in upgrade for the MR556 & CR556. Includes: HK 416 A5...
    $179.95
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  • New - Surefire 12-Pack 123A Batteries - HKP-02711
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    12-Pack 123A Batteries

    Surefire

    $29.95
    Surefire 12-Pack 123A Batteries Made in the USA and the "gold standard" in battery performance. These are the best performance, longest lasting 123 batteries available. The price is for a box of 12 new batteries. Ideal for use with lasers, lights,...
    $29.95
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    HK MP5K, AP5P OEM Picatinny Rail MKE HKP-22334 HK MP5K, AP5P OEM Picatinny Rail MKE HKP-22334

    HK MP5, MP5K, AP5-P Optic Mount - Picatinny

    MKE

    $49.95
    MKE HK MP5K, AP5P OEM Picatinny Optic Rail MKE Picatinny optic rail for the MP5K platform.  OEM part for the Century AP5-P and AP5-M.  This rail is the K specific length but is compatible with full size MP5 guns as well. Compatible With: HK...
    $49.95
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    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 - 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 - 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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  • 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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  • 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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  • 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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