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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  • HK MP5K End Cap MKE HKP-22373 HK MP5K End Cap MKE HKP-22373
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    HK MP5K End Cap w/ Swivel Attachment

    MKE

    $69.95
    MKE HK MP5K End Cap with Swivel Attachment Durable factory-style end cap designed for MP5K platforms. Provides a secure sling mounting point for MP5K pistols. Compatible With: HK MP5K HK SP89 HK SP5K (may require some fitting, install lower pin before...
    HKP-22373
    $69.95
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  • New - HKP HK MP5K .40/10 Picatinny Rail Brace/Stock Adapter - HKP-21833 HK MP5K Stock or Brace Adapter - 10mm / .40 S&W - Picatinny Rail
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    HK MP5K Stock or Brace Adapter - 10mm / .40 S&W - Picatinny Rail

    HKP HK Parts

    $129.95
    HKP HK MP5K .40/10 Picatinny Rail Brace/Stock Adapter Open your MP5K up to a vast range of brace and stock options with our Picatinny rail stock adapter.  Designed specifically for the MP5K 40 cal and 10mm platforms.  Available exclusively at...
    HKP-21833
    $129.95
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  • New - Strike Universal Picatinny - Dual Folding Adapter - Stock - HKP-21306 Picatinny - Dual Folding Adapter - Stock
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    Picatinny - Dual Folding Adapter - Stock

    Strike Industries

    $199.95
    Strike Industries Dual Folding Stock This Strike Industries stock is ideal for MP5 or MP5K platforms featuring a 1913 Picatinny rail interface. Conveniently compatible with any platform featuring a Picatinny backplate. It offers quick, easy, and...
    HKP-21306
    $199.95
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  • New - RCM HK MP5K 10mm Barrel - Threaded 9/16x24 - HKP-21157 HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug
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    HK MP5K Barrel - 10mm - Threaded 9/16x24 with 3 Lug

    RCM

    $279.95
    RCM HK MP5K 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5K with the RCM HK MP5K 10mm Barrel. This barrel is precision engineered for superior accuracy and durability, making it an essential upgrade for firearm enthusiasts...
    HKP-21157
    $279.95
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  • On Sale
    New - H&K MP5K 40/10 SEF Navy Style Trigger Housing - HKP-20137-M HK MP5K 40/10 SEF Navy Style Trigger Housing
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    HK MP5K 40/10 SEF Navy Style Trigger Housing

    H&K Heckler & Koch

    Now: $143.96
    Was: $179.95
    H&K MP5K 40/10 SEF Navy Style Trigger Housing HK German MP5K 40/10 SEF Navy style clipped & pinned housing. New factory German housing that has the cutout for the bolt hold open found on the MP5 40/10 family of firearms. This housing is the best...
    HKP-20137-M
    Now: $143.96
    Was: $179.95
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  • New - H&K MP5K 9mm Semi Auto SF style Trigger Group Complete - HKP-19936 HK MP5K 9mm Semi Auto SF style Trigger Group Complete
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    HK MP5K 9mm Semi Auto SF style Trigger Group Complete

    USA

    $449.95
    H&K MP5K 9mm Semi Auto SF style Trigger Group Complete Each unit is composed of German HK & the finest US made HK Parts. This lower is ready to drop on your semi auto HK firearm. Comes complete with the US made parts already installed, 3rd gen...
    HKP-19936
    $449.95
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  • New - RCM MP5K 40/10 Full Auto Bolt Carrier - HKP-01826 HK MP5K Bolt Carrier - Full Auto - 10mm / .40 S&W
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    HK MP5K Bolt Carrier - Full Auto - 10mm / .40 S&W

    RCM

    $157.95
    MP5K 40/10 Full Auto Bolt Carrier - Latest Upgraded Version This part is built from billet ordnance steel. This US-made MP5K 40,10 style carrier is made with Tungsten and is heat-treated, providing the finest American-made carrier...
    HKP-01826
    $157.95
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  • Out Of Stock
    New - H&K MP5K 40/10 3 Position Navy Style Housing - Clipped & Pinned - HKP-15454 HK MP5K 40/10 3 Position Navy Style Housing - Clipped & Pinned

    HK MP5K 40/10 3 Position Navy Style Housing - Clipped & Pinned

    H&K Heckler & Koch

    $0.00
    H&K MP5K 40/10 3 Position Navy Style Housing - Clipped & Pinned This lower housing is clipped and pinned for use on a semi-auto receiver shelves. For more information on our clipping and pinning, see our services section. We offer the best...
    HKP-15454
    $0.00
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  • Out Of Stock
    On Sale
    HK MP5, HK94, SP89, SP5K Brass Catcher - USED HK MP5, HK94, SP89, SP5K Brass Catcher - USED

    HK MP5, HK94, SP89, SP5K Brass Catcher - USED

    E&L MFG

    Now: $53.95
    Was: $79.95
    HK MP5, HK94, SP89, SP5K Brass Catcher - USED ONLY 1 UNIT AVAILABLE - AS PICTURED RESIDUE USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Rigid brass catchers are uniquely designed to conform to the...
    HKP-00845-USED
    Now: $53.95
    Was: $79.95
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    Now: $53.95
    Was: $79.95
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  • Out Of Stock
    On Sale
    HK MP5K Metal Housing - USED HK MP5K Metal Housing - USED

    HK MP5K Metal Housing - USED

    H&K Heckler & Koch

    Now: $124.95
    Was: $199.95
    Heckler and Koch HK MP5K Metal Housing ONLY 1 UNIT AVAILABLE - AS PICTURED Factory metal trigger housing for the HK MP5K platform. Intended for replacement, reference, or build use on applicable MP5K pattern firearms. Includes: Metal frame Black...
    HKP-99386
    Now: $124.95
    Was: $199.95
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    Now: $124.95
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  • WOOX Woody Stock - Walnut - Picatinny Mount WOOX Woody Stock - Walnut - Picatinny Mount
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    WOOX Woody Stock - Walnut - Picatinny Mount

    WOOX

    $228.95 - $298.95
    WOOX Woody Stock - Walnut The WOOX Woody Stock is a premium upgrade for rifles and SMGs featuring a Picatinny stock interface. Crafted from solid American walnut, it delivers classic warmth with modern ergonomics; featuring an adjustable cheek riser, QD...
    HKP-22461-M
    $228.95 - $298.95
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  • On Sale
    MKE AP5, MP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL MKE HKP-22220-BL-B MKE AP5, MP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL MKE HKP-22220-BL-B
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    HK MP5, AP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL

    MKE

    Now: $9.95
    Was: $49.95
    MKE AP5, MP5 Front Sight Tower - CRACKED - GUNSMITH SPECIAL SOLD INDIVIDUALLY - CRACKED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Please Note: Will require...
    HKP-22220-BL-B
    Now: $9.95
    Was: $49.95
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