All Parts

All Parts

At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.

Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.

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  • New - H&K 12 Round HK USP .45 ACP Extended Floorplate Magazine - Red Follower - HKP-21418 HK 12 Round HK USP .45 ACP Extended Floorplate Magazine - Red Follower
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    HK 12 Round HK USP .45 ACP Extended Floorplate Magazine - Red Follower

    H&K Heckler & Koch

    $49.95
    HK German Production USP .45 - 12 Round Magazine - Red Follower Compatible With: HK USP .45 Full-Size Pistols HK USP 45 Tactical USP Expert, USP Elite Please Note: This will not fit the HK Mark 23 without swapping the floorplate to the Mark 23...
    $49.95
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  • New - HKP HK VP9/VP40 Tactical Low Profile Magwell - HKP-17802-M HKP HK VP9/VP40 Tactical Low Profile Magwell
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    HKP HK VP9/VP40 Tactical Low Profile Magwell

    HKP HK Parts

    $44.95 - $59.95
    HKP HK VP9/VP40 Tactical Low Profile Magwell Low Profile, every day carry magwell for the HK VP9/VP40 pistol. The low profile mag-well is designed for the average every day VP owner. Whom would like the enhancements and competitive advantage a magwell...
    $44.95 - $59.95
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  • New - HKP HK VP9/VP9L Optics Plate Replacement Screw - HKP-19709 HKP HK VP9/VP9L Optics Plate Replacement Screw
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    HKP HK VP9/VP9L Optics Plate Replacement Screw

    HKP HK Parts

    $1.95
    Replacement Screw For VP9, VP9L Optics Plate & Optics Filler Cover Torx head plus T20 steel replacement screw for any HK German or USA made VP9 optics ready slide filler plate or optics plate. **Each screw is sold separately/individually. Please...
    $1.95
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  • New - SB Tactical HK MP5 .22LR Pistol Stabilizing Brace - HKP-21226 SB Tactical HK MP5 .22LR Pistol Stabilizing Brace
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    SB Tactical HK MP5 .22LR Pistol Stabilizing Brace

    SB Tactical

    $149.95
    SB Tactical - HK MP5 .22LR Pistol Stabilizing Brace The SBT5-22 Pistol Stabilizing Brace® enhances your HK MP5 .22LR with an integral, side-folding polymer endplate. The SBT5-22 gives you all of the advantages of a pistol with improved control by...
    $149.95
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  • New - US Ejector Lever Axle - 90 Series - HKP-20630 US Ejector Lever Axle - 90 Series
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    US Ejector Lever Axle - 90 Series

    HKP HK Parts

    $9.95
    US Ejector Lever Axle This US ejector lever axle pin holds the ejector lever in place in the trigger pack. Made out to HK spec for the best US replacement part on the market. The best replacement for your worn out or broken axle. A must have replacement...
    $9.95
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  • New - H&K Roller Retainer Pin - New Style - HKP-01954 HK Roller Retainer Pin - New Style
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    HK Roller Retainer Pin - New Style

    H&K Heckler & Koch

    $6.95
    HK Roller Retainer Pin, Clamping Sleeve- New Style This part works with all roller retainer plates and springs. HK started this change of roller retainer pins starting in all 2011-produced bolt heads. Works with all styles of roller retainer plates...
    $6.95
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  • New - AC-Unity 30 Round HK MP5 9mm Magazine - Black - HKP-20155 HK MP5 Magazine - 9mm - 30 Round
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    HK MP5 Magazine - 9mm - 30 Round

    AC-Unity

    $22.95
    AC-Unity 30 Round HK MP5 9mm Magazine  CLICK ON THE "Bulk Pricing" LINK ABOVE (UNDER THE SKU NUMBER) FOR OUR BULK PRICING SCHEDULE The AC-Unity 30 round MP5 magazine is a lightweight, impact resistant and reliable magazine for all 9mm HK MP5, SP5,...
    $22.95
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    $22.95
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  • New - MP5, SP5 - A2 Fixed Stock-Black - HKP-02314 HK MP5, SP5 Stock - A2 Fixed
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    HK MP5, SP5 Stock - A2 Fixed

    Michaels Machines

    $179.95
    HK MP5, SP5 Stock - A2 Fixed - US Made Each stock counts as one US-made compliant part. Perfect for that build where you US-made component is required for compliance. This is the finest US-made MP5 stock as it includes a rubberized backplate to mitigate...
    $179.95
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  • New - H&K 15 Round HK VP9SK/P30SK 9mm Magazine - Black - HKP-18496 HK 15 Round HK VP9SK/P30SK 9mm Magazine
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    HK 15 Round HK VP9SK/P30SK 9mm Magazine

    H&K Heckler & Koch

    $49.00
    HK VP9SK & P30SK 9mm - 15 Round Magazine New German HK manufacture 15 Round 9mm P30SK, VP9SK mag. New factory fresh German HK manufacture. Compatible With: HK VP9SK HK P30SK
    $49.00
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  • Out Of Stock
    New - RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree - HKP-02190 RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree

    RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree

    RCM

    $34.95
    RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree This part is used in conjunction with a suppressor and 147-grain or heavier ammunition. This item is made 100% here in the US from enhanced steel and heat treated to the proper specifications...
    $34.95
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  • New - HKP Rear Stock Pin Bushing Weldment - HKP-17573
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    HK Stock Pin Bushing Weldment

    HKP HK Parts

    $3.95
    HK Stock Push Pin Bushing Weldment All-steel stock pin bushing weldment for welding in the rear of the flat. This bushing welds into the folded flat and guides the large push pin through the receiver to hold the stock to the receiver. Compatible...
    $3.95
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    $3.95
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  • New - HK MP5 .22 Match Trigger Upgrade Spring Kit - HKP-17335 HK MP5 .22 Match Trigger Upgrade Spring Kit
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    HK MP5 .22 Match Trigger Upgrade Spring Kit

    HKP HK Parts

    $17.49
    H&K MP5 .22 Match Trigger Spring Kit - Set of 3 Enhanced Springs The HK Parts Match drop-in spring upgrade set will enhance your MP5-22's trigger pull to an even smooth, crisp, and lighter pull that will promote better control, which in turn promotes...
    $17.49
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