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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  • On Sale
    Used - HKP HK MP5 9mm Magazine Locking Plate - Black - USED - HKP-99240 HK MP5 Magazine Locking Plate - 9mm - Black - USED
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    HK MP5 Magazine Locking Plate - 9mm - Black - USED

    HKP HK Parts

    Now: $5.95
    Was: $12.95
    HKP HK MP5 9mm Magazine Locking Plate - Black - USED ONLY 1 UNIT LEFT - AS PICTURED - SOLD INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Locking...
    HKP-99240
    Now: $5.95
    Was: $12.95
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    Now: $5.95
    Was: $12.95
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  • New - B&T 52mm QD Skeleton Mount for Aimpoint ACRO - HKP-21860 Picatinny Optic Mount - 52mm - Skeleton - Aimpoint ACRO
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    Picatinny Optic Mount - 52mm - Skeleton - Aimpoint ACRO

    B&T Brugger & Thomet

    $148.95
    B&T 52mm QD Skeleton Mount for Aimpoint ACRO The B&T QD Skeleton Mount for the Aimpoint ACRO offers a 52mm elevated profile for improved sight alignment. It is ideal for night vision setups that require clearance over forward-mounted IR devices...
    HKP-21860
    $148.95
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    $148.95
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  • New - HKP HK MP5K .40/10 Stock Adapter with Stock - HKP-21834 HK MP5K Stock and Stock or Brace Adapter 10mm / .40 S&W
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    HK MP5K Stock and Stock or Brace Adapter 10mm / .40 S&W

    HKP HK Parts

    $289.95
    HKP HK MP5K .40/10mm Stock Adapter with Stock Designed to adapt UMP style and B&T folding stocks directly to the .40/10mm K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40/10mm
    HKP-21834
    $289.95
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    $289.95
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  • New - HKP MP5K SD Shroud and Handguard (Rubber Grip Only) - HKP-20951 HK MP5KSD Rubber Grip Only - Barrel Shroud Handguard
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    HK MP5KSD Rubber Grip Only - Barrel Shroud Handguard

    HKP HK Parts

    $179.95
    HK Parts replacement rubber grip for HK MP5KSD Barrel Shroud and Handguard (Rubber Grip Only) Perfect size handguard to pair with the HKP MP5K SD shrouds. Engages perfectly on the machined lugs of our MP5K SD shrouds.  Available exclusively at HK...
    HKP-20951
    $179.95
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    $179.95
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  • Out Of Stock
    New - USA HK MP5/MP5K T1/H1 Aimpoint Low Mount - HKP-17117 HK MP5, MP5K Optic Mount - Low Profile - T1, H1 Aimpoint

    HK MP5, MP5K Optic Mount - Low Profile - T1, H1 Aimpoint

    USA

    $49.95
    Aimpoint T1 & H1 Low Profile Mount For HK MP5, MP5K New US manufactured scope mount that is similar in style as the revered B&T optics mount only made right here in the USA. All aluminum and made to last with a price that is attractive & hard...
    HKP-17117
    $49.95
    Out Of Stock
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    $49.95
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  • New - B&T HK MP5K, HK SP89, HK SP5K Folding Stock/Length Adjustable Helmet Stock - Black - HKP-18101 HK MP5K, SP5K, SP89 Helmet Stock - Folding and Adjustable
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    HK MP5K, SP5K, SP89 Helmet Stock - Folding and Adjustable

    B&T Brugger & Thomet

    $379.95
    B&T HK MP5K, SP5K, SP89 Helmet Stock - Folding and Adjustable This Swiss-made folding helmet stock offers a compact, military-grade solution for MP5K-pattern firearms. Built from durable polymer and aluminum, it provides smooth length adjustment and...
    HKP-18101
    $379.95
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    $379.95
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  • New - HKP MP5/K 40/10 Locking Piece - Extra Low Impulse - HKP-18273 HK MP5, MP5K 40/10 Locking Piece - Extra Low Impulse
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    HK MP5, MP5K 40/10 Locking Piece - Extra Low Impulse

    HKP HK Parts

    $49.95
    HKP MP5/K 40/10 Locking Piece - Extra Low Impulse Marked 100 Degree For the MP5 40 or 10mm Firearms. Made out of enhanced material and heat-treated to spec. The #100 degree locking piece is an extra low impulse 40/10 locking piece. To be used with MP5...
    HKP-18273
    $49.95
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  • New - MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned - HKP-18055 MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned
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    MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned

    H&K Heckler & Koch

    $599.95
    MP5K Navy Style SEF Semi Trigger Group - C/P HK German manufactured parts. Each unit comes with the professionally converted SEF navy style SEF clipped & pinned housing and semi auto only German HK trigger pack. All trigger groups include a new 3rd...
    HKP-18055
    $599.95
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    $599.95
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  • Out Of Stock
    New - H&K MP5K 9mm Complete PDW FBI Trigger Group - HKP-02699 HK MP5K 9mm Complete PDW FBI Trigger Group

    HK MP5K 9mm Complete PDW FBI Trigger Group

    H&K Heckler & Koch

    $799.95
    H&K MP5K 9mm Complete PDW FBI Trigger Group This is a great upgrade and investment for your factory swing down MP5K or PDW (shown with an optional small push pin installed). New HK German with all the latest HK upgraded parts. Compatible With: HK...
    HKP-02699
    $799.95
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    $799.95
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  • On Sale
    HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1 HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1
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    HK MP5, HK MP5K Optic Mount - Aimpoint ACRO P-1

    HKP HK Parts

    Now: $72.95
    Was: $98.95
    HKP HK MP5, HK MP5K Aimpoint ACRO P1 Mount Low-profile mount with a direct Aimpoint ACRO mounting interface. The smallest mount in the market with a sleek and clean overall look. Full co-witness, this mount is the best in the market with the best 3-piece...
    HKP-99354
    Now: $72.95
    Was: $98.95
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    Now: $72.95
    Was: $98.95
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  • HK MP5K, AP5-P Rear Sight Drum HK MP5K, AP5-P Rear Sight Drum
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    HK MP5K, AP5-P Rear Sight Drum

    MKE

    $28.95
    MKE MP5K & AP5-P Rear Sight Drum Factory MKE manufactured rear sight drum for the Century AP5-P.   Compatible With: HK MP5K Century AP5-P, AP5-M HK SP89 HK SP5K In-spec clones and custom builds
    HKP-22480
    $28.95
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  • On Sale
    New - HK MP5K .40 S&W 3-Lug Barrel Thread Protector - Threaded 9/16x24 - HKP-02318 HK MP5K Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug
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    HK MP5K Barrel - .40 S&W - Threaded 9/16x24 with 3 Lug

    HKP HK Parts

    Now: $199.95
    Was: $299.95
    HK MP5K .40 S&W 3-Lug Barrel with Thread Protector - Threaded 9/16x24 3-lugged Barrel with a 9/16x24 thread protector.  Specifications: 3-lugged barrel Includes 9/16x24 thread protector Compatible With: HK MP5K .40 S&W
    HKP-02318
    Now: $199.95
    Was: $299.95
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    Now: $199.95
    Was: $299.95
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