Parts

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 HK USP Left Side V3 Decocking Lever - HKP-01168
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    HK USP Left Side V3 Decocking Lever

    H&K Heckler & Koch

    $59.95
    H&K HK USP Left Side V3 Decocking Lever V3 decock only lever for right-handed operation. German HK V3 lever for full-size USP's. When used along with the V3 - V4 detent plate, it will convert to decock only - no safety. For use with right-handed...
    HKP-01168
    $59.95
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  • Out Of Stock
    New - H&K HK MR556 Front Lower Receiver Locking Pin - HKP-02663 HK416, MR556 Takedown Pin - Front - A1 Style

    HK416, MR556 Takedown Pin - Front - A1 Style

    H&K Heckler & Koch

    $64.95
    H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...
    HKP-02663
    $64.95
    Out Of Stock
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  • New - H&K 93/53/33 (5.56/.223) Trigger Group - SEF Navy Style - Full Auto - Push Pin - HKP-18189 HK33, HK53, HK93 Trigger Group - SEF Navy Style - Full Auto - Push Pin
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    HK33, HK53, HK93 Trigger Group - SEF Navy Style - Full Auto - Push Pin

    H&K Heckler & Koch

    $549.95
    HK German HK93, 33, 33K, 53 SEF Navy Style F/A Trigger Group Complete - Used ON SALE FOR A SPECIAL PROMOTION WHILE SUPPLIES LAST!!! Each trigger group is comprised of genuine Heckler & Koch products Includes: German Full Auto trigger pack with all...
    HKP-18189
    $549.95
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  • New - H&K 93/53/33 & G3/91 5.56/.223 & 7.62x51/.308 Muzzle Protector Cap - HKP-13959 HK91, G3, HK33, HK53, HK93 Muzzle Protector Cap
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    HK91, G3, HK33, HK53, HK93 Muzzle Protector Cap

    H&K Heckler & Koch

    $5.95
    H&K 93/53/33 & G3/91 5.56/.223 & 7.62x51/.308 Muzzle Protector Cap This cap covers the barrel end or flash hider to prevent debris, water, etc., from entering the barrel. The cap can be removed by hand or when the first round is fired with...
    HKP-13959
    $5.95
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    $5.95
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  • New - H&K SP5K 9mm Drop In Paddle Mag Release Upgrade Kit - HKP-18082 HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
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    HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit

    H&K Heckler & Koch

    $129.95
    HKP HK Parts and Heckler and Koch Anti-Rattle Roller Tipped Paddle Magazine Release Kit  No modifications, no refinishing...complete drop-in kit included New HK German and USA made paddle mag release kit for the HK SP5K. This kit will allow any...
    HKP-18082
    $129.95
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    $129.95
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  • On Sale
    New - HKP HK 416 .22LR Dual Clamp - Magazine - HKP-21607-M HK416 Dual Magazine Clamp - .22 LR
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    HK416 Dual Magazine Clamp - .22 LR

    HKP HK Parts

    Now: $39.96
    Was: $49.95
    HKP HK 416 .22LR Dual Magazine Clamp  Securely hold two HK 416 .22LR magazines together for fast mag swaps. Precision-machined from billet aluminum. Our dual mag clamp is a must for those quick mag changes. Compatible With: HK 416 .22LR
    HKP-21607-M
    Now: $39.96
    Was: $49.95
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  • HK UMP Magazine - 30 Round - 9mm HK UMP Magazine - 30 Round - 9mm
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    HK UMP Magazine - 30 Round - 9mm

    H&K Heckler & Koch

    $62.95
    HK Heckler and Koch German 9mm 30 Round Factory Magazine for HK UMP The latest HK German production 30-round magazine is new and hard to find. Compatible With: UMP 9mm USC 9mm conversions Omega 9mm UMP, USC builds
    HKP-00608
    $62.95
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    $62.95
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  • New - H&K MP5SD 9mm Barrel Port Brush - HKP-00137 HK MP5SD Barrel Port Cleaning Brush - 9mm
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    HK MP5SD Barrel Port Cleaning Brush - 9mm

    H&K Heckler & Koch

    $164.95
    HK Factory MP5SD Barrel Port Brush A much-needed barrel brush to keep the barrel clean on all factory HK MP5SD'S. Fits HK factory SD barrels or in-spec clone barrels such as RCM US-made barrels. Compatible With: MP5SD models Grab a...
    HKP-00137
    $164.95
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    $164.95
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  • On Sale
    New - Comp-Tac HK VP9, VP9L & Match International Holster - Right Hand - HKP-20200 HK VP9, VP9L, Match International Holster - RH
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    HK VP9, VP9L, Match International Holster - RH

    Comp-Tac

    Now: $71.95
    Was: $79.95
    Comp-Tac HK VP9, VP9L & Match International Holster - Right Hand One holster to fit your entire VP9 button collection, including your VP9 Match. Comp-Tac has worked with HK Parts to develop a flexible holster to fit your needs- whether you have the...
    HKP-20200
    Now: $71.95
    Was: $79.95
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    Now: $71.95
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  • On Sale
    New - HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut - HKP-20315 HK MP5, HK90 Series Pinned Hammer Strut
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    HK MP5, HK90 Series Pinned Hammer Strut

    HKP HK Parts

    Now: $10.95
    Was: $13.95
    HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut New USA hammer strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: HK trigger...
    HKP-20315
    Now: $10.95
    Was: $13.95
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    Now: $10.95
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  • Out Of Stock
    New - H&K USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH - HKP-00328 HK USP Tactical Barrel - .40 S&W - 4.9"- Threaded 14.5x1 LH

    HK USP Tactical Barrel - .40 S&W - 4.9"- Threaded 14.5x1 LH

    H&K Heckler & Koch

    $299.95
    H&K USP .40 S&W Tactical Barrel - Threaded 14.5x1 LH This genuine Heckler & Koch part is a drop-in replacement for the full-size USP, USP Tactical, and other .40 S&W pistols. The tactical threaded barrel offers precise fit and...
    HKP-00328
    $299.95
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  • New - H&K HK USP/USPC/45/45C New Style Hammer - HKP-01256
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    HK45, HK45 Compact, USP, USP Compact New Style Hammer

    H&K Heckler & Koch

    $62.95
    H&K HK USP/USPC/45/45C New Style Hammer Will work for USP/USPC variants 1-4, 9 & 10. This part replaces the older HK hammer without the sear cutout (part #214825). Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact...
    HKP-01256
    $62.95
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    $62.95
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