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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  • Used - H&K MP5/SP5K Rear Sight Set Complete-Used - HKP-00671
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    HK MP5/SP5K Rear Sight Set Complete-Used

    H&K Heckler & Koch

    $109.95
    HK German MP5 & HK94 Rear Sight Set Complete - Used Taken from demilled MP5's. Includes the entire rear sight assembly and hardware set for the complete rear sight assembly. In some cases, we have replaced the rear sight drum with a brand-new German...
    $109.95
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  • Used - H&K HK MP5K Slimline Forearm - Black - HKP-20275 HK MP5K Slimline Handguard
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    HK MP5K Slimline Handguard

    H&K Heckler & Koch

    $49.95
    H&K HK MP5K Slimline Forearm Used German military slimline forearm refinished in a  black cerakote . Cut down to fit the MP5k. These are rare items only offered here at HK Parts. Each item is in good to excellent shape. Compatible With: MP5K,...
    $49.95
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  • New - RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug - HKP-01764 HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug
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    HK MP5K, SP5K, SP89 Barrel - 9mm - 5.85" - 3 Lug

    RCM

    $149.95
    RCM MP5K/SP5K/SP89 9mm Barrel - Non-Threaded 3-Lug This is the only US-made non-threaded barrel that uses the same steel and Cold Hammer Forged (CHF) process as Heckler & Koch. Precision-milled to the latest MP5KN PDW specifications with...
    $149.95
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  • Out Of Stock
    New - AIM M-LOK Quick Detach Sling Swivel Mount - HKP-18589 M-LOK Sling Swivel Mount - Quick Detach

    M-LOK Sling Swivel Mount - Quick Detach

    AIM

    $24.99
    M-LOK Quick Detach Sling Swivel Mount The Aim M-LOK® QD Sling Mount stud with QD swivel provides a front attachment point for your push button QD sling or sling with just strap. Includes: All necessary mounting hardware and wrenches Features: High...
    $24.99
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  • Refurbished - HKP SEF Short Axle Selector Lever for Metal Trigger Housings - Refinished - HKP-21921 HK SEF Short Axle Selector Lever for Metal Trigger Housings - Refinished
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    HK SEF Short Axle Selector Lever for Metal Trigger Housings - Refinished

    HKP HK Parts

    $34.95
    HKP SEF Short Axle Selector Lever for Metal Trigger Housings - Refinished HK steel SEF short axle selector lever. Fits all metal HK grip frames. Please note that the polymer (plastic) style SEF housing uses the long axle SEF selector lever and not this...
    $34.95
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  • New - HKP Dual HK MP5 Magazine Clamp Conversion Screw - HKP-20318 HK MP5 Dual Magazine Clamp Conversion Screw - G3 to MP5 Mags
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    HK MP5 Dual Magazine Clamp Conversion Screw - G3 to MP5 Mags

    HKP HK Parts

    $2.95
    HKP Dual HK MP5 Magazine Clamp Conversion Screw This screw converts a HK91, G3, PTR dual magazine clamp (HKP-19634) into the correct length for use with an MP5 magazine. Includes:  1 screw
    $2.95
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    $2.95
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  • New - H&K Cocking Tube Extrusion - 12" Section - HKP-13487 HK Cocking Tube Extrusion - 12" Section
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    HK Cocking Tube Extrusion - 12" Section

    H&K Heckler & Koch

    $54.95
    H&K Factory Cocking Tube Extrusion 12" Section HK cocking tube section is perfect for custom HK cocking tube projects. Overall length is 12" long. All steel and ready for that custom project or custom build. Perfect for custom cocking tube...
    $54.95
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  • New - HK MP5 Aimpoint ACRO A-2 with Optic Mount - HKP-21899-M HK MP5, SP5K Optic Mount - Aimpoint ACRO P-2
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    HK MP5, SP5K Optic Mount - Aimpoint ACRO P-2

    HKP HK Parts / Aimpoint

    $689.95
    HK MP5 Aimpoint ACRO P-2 with HKP Optic Mount The HKP optic mount securely positions the ACRO P-2 sight for fast, intuitive target acquisition, while preserving a clear view of the factory sights. Includes: HK MP5 Optic Mount (ACRO interface) Aimpoint...
    $689.95
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  • Out Of Stock
    New - JMAC Customs AB-8 w/ Brace/Stock Adapter and 1913 Folding Mech - HKP-20148 AB-8 and Stock or Brace Adapter - 1913 Folding Mech

    AB-8 and Stock or Brace Adapter - 1913 Folding Mech

    JMAC Customs

    $269.95
    JMAC Customs AB-8 w/ Brace/Stock Adapter and 1913 Folding Mech If your firearm doesn't already have a 1913 attachment rail on the rear, choose the appropriate adapter above! (A)rm(B)ar(8)inch + AB-BA brace adapter + JMac 1913 folding mech. (not...
    $269.95
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  • On Sale
    New - MKE Trigger Pack Ejector Lever Axle - HKP-22241 MKE Trigger Pack Ejector Lever Axle MKE HKP-22241
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    HK90 Series Ejector Lever Axle for SEF, Navy, and Burst Trigger Packs

    MKE

    Now: $10.10
    Was: $17.95
    MKE Trigger Pack Ejector Lever Axle Fits all SEF & Ambidextrous style HK trigger packs regardless of caliber. MKE product made on HK tooling.  Fits all of the following 90 series trigger packs: SEF, O,1 Navy Burst
    Now: $10.10
    Was: $17.95
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  • On Sale
    New - Strike Industries HK MP5K Drop-In MOD2 Stock - HKP-21330-M HK MP5K, SP5K Stock - MOD2 - Strike Industries
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    HK MP5K, SP5K Stock - MOD2 - Strike Industries

    Strike Industries

    Now: $111.71
    Was: $199.95
    Strike Industries HK MP5K Drop-In MOD2 Stock We pair our MP5K AR stock adpter with this Strike MOD2 stock to give you a drop-in MP5K stock. Give your build a modern look and added comfort and adjustability of the MOD2 stock.  Only available here at...
    Now: $111.71
    Was: $199.95
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    Now: $111.71
    Was: $199.95
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  • New - HKP/H&K MP5K/SP89 9mm SEF Semi-Auto Metal Style Grip Frame - HKP-16490 HK MP5K/SP89 9mm SEF Semi-Auto Metal Style Grip Frame
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    HK MP5K/SP89 9mm SEF Semi-Auto Metal Style Grip Frame

    HKP HK Parts

    $189.95
    HKP/H&K MP5K/SP89 9mm SEF Metal Style Grip Frame Each German HK housing started out as a factory HK German select fire metal housing. Each housing was modified by welding in a factory correct semi auto shelf, clipped from a double tang housing to a...
    $189.95
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