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 20 Round HK MR556/416 Magazine - Black - HKP-00029 HK416, MR556 Magazine - 20 Round
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    HK416, MR556 Magazine - 20 Round

    H&K Heckler & Koch

    $74.95
    Heckler and Koch HK 20 Round HK MR556 and HK416 5.56/.223 Magazine New HK416 and HK MR556 Factory 20 Round Steel Maritime Coated Magazine. Will fit and work in all AR-15/M16 weapons. Perfect for those who need a lower profile magazine or who will be...
    HKP-00029
    $74.95
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  • On Sale
    New - MKE HK33, HK53, HK93 5.56 / .223- A3 Telescopic Stock - HKP-21287-M HK93, HK53, HK33 A3 Telescopic Stock
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    HK93, HK53, HK33 A3 Telescopic Stock

    MKE

    $319.95 - $399.95
    MKE A3 Telescopic Stock in Cerakote for HK93, HK33, HK53, and Z43 A3 telescopic stock for the HK33, HK53, HK93 built by MKE on HK tooling.  These MKE stocks are your best option for a new production stock now that HK has discontinued them...
    HKP-21287-M
    $319.95 - $399.95
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  • Used - HKP - 17 Round HK45 Magazine - HKP-20787 HK45 Magazine - 17 Round
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    HK45 Magazine - 17 Round

    HKP HK Parts / Heckler & Koch

    $659.95
    HKP - 17 Round HK45 Magazine HK45 & HK45 tactical +7 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 17 round HK45, HK45 tactical magazine. Ideal for competition shooters that would like...
    HKP-20787
    $659.95
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    $659.95
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  • Used - H&K Standard Roller 8.00mm - Used - HKP-19374 HK Standard Roller 8.00mm - Used
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    HK Standard Roller 8.00mm - Used

    H&K Heckler & Koch

    $7.95
    8.00mm Standard Size (zero or unmarked) For HK Roller Lock Bolt Head HK spec unmarked 8.00mm roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. The best roller on the market...
    HKP-19374
    $7.95
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  • Out Of Stock
    New - HKP SP5K Bench Mat - HKP-18213 HK SP5K Bench Mat

    HK SP5K Bench Mat

    HKP HK Parts

    $13.95
    HK MP5K, SP5K, SP89 Gunsmithing Bench Mat This isn't your ordinary gun cleaning mat. Show your pride for your HK SP5K firearm while using our high quality neoprene rubber backed and cloth topped gun cleaning mat to protect your gun bench, desk, kitchen...
    HKP-18213
    $13.95
    Out Of Stock
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  • On Sale
    New - GSG/Sig Sauer/Kimber Magazine Spring - HKP-02795 GSG5, SIG Magazine Spring - Kimber - 1911 .22LR conversions
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    GSG5, SIG Magazine Spring - Kimber - 1911 .22LR conversions

    GSG German Sports Guns

    Now: $1.99
    Was: $3.95
    GSG/Sig Sauer/Kimber Magazine Spring German-made spare magazine spring for your 10-round 1911 magazine. Compatible With:  GSG5 1911 SIG Kimber & many other guns that use this style of magazine for the 1911 .22 conversions. 
    HKP-02795
    Now: $1.99
    Was: $3.95
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  • On Sale
    New - HKP HK MP5K Tactical Tri-Rail - HKP-16765-M HK MP5K Tactical Tri-Rail
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    HK MP5K Tactical Tri-Rail

    HKP HK Parts

    Now: $71.95
    Was: $89.95
    HKP Tactical Tri-Rail - Black - MP5K  Our new modular tactical forearm comes with 3 rails on the left, right and bottom. That are removable and adjustable for you own taste and mission requirements. Made from aircraft grade aluminum and steel...
    HKP-16765-M
    Now: $71.95
    Was: $89.95
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  • New - H&K Roller Sear For SEF, Navy Trigger Packs - HKP-01710 HK Roller Sear For SEF, Navy Trigger Packs
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    HK Roller Sear For SEF, Navy Trigger Packs

    H&K Heckler & Koch

    $29.95
    H&K Roller Sear For SEF & Navy Trigger Packs It is the newer style, not the older friction type of sear. This item is also referred to as the catch with a roller but is more commonly called a sear.
    HKP-01710
    $29.95
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  • New - Trijicon, HKP HK MP5 3.25 MOA / Optic Mount Bundle - Black - HKP-20732 HK MP5, SP5K Optic Mount - Trijicon RMR - 3.25 MOA
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    HK MP5, SP5K Optic Mount - Trijicon RMR - 3.25 MOA

    Trijicon

    $624.95
    RMR Optic Mount - Bundle - HK MP5 Includes:  (1) Trijicon RMR Type 2 Red Dot Sight - 3.25 MOA Red Dot, LED Illuminated (1) MP5 RMR Optic Mount The finest mounting solution to properly mount your RDS on your MP5 or any other receiver that utilizes...
    HKP-20732
    $624.95
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    $624.95
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  • New - H&K 10 Round HK USP 9mm Magazine - Black - HKP-01239 HK USP Magazine - 9mm - 10 Round
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    HK USP Magazine - 9mm - 10 Round

    H&K Heckler & Koch

    $49.95
    H&K 10 Round HK USP 9mm Magazine  Perfect for those that live in magazine restrictive states or for those that require a 10 round mag capacity.  Compatible With: HK USP 9mm HK USP 9mm Tactical HK USP P8
    HKP-01239-M
    $49.95
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  • New - H&K 91/G3 (7.62x51/.308) Mag Release Set - HKP-00929 HK91, G3 Magazine Release Set
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    HK91, G3 Magazine Release Set

    H&K Heckler & Koch

    $34.95
    Heckler and Koch Magazine Release Set (Left to Right) for HK91, G3 This HK German manufactured magazine release set for HK .308 pattern rifles consists of 4 pieces. Includes: Magazine Catch Magazine Catch Spring Push Button Clamping Sleeve to retain...
    HKP-00929
    $34.95
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  • On Sale
    New - HKP HK 91 Polymer To Metal Trigger Group Conversion Kit - HKP-17362 HK91 Polymer To Metal Trigger Group Conversion Kit
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    HK91 Polymer To Metal Trigger Group Conversion Kit

    HKP HK Parts

    Now: $179.95
    Was: $225.95
    HK 91/PTR 91 Polymer To Metal Trigger Group Conversion Kit. This is everything you will need to convert the lower trigger group on your HK 91 from polymer to metal housing with contoured grip. Just use your existing trigger pack to complete the...
    HKP-17362
    Now: $179.95
    Was: $225.95
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