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 - GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut - HKP-18252 HK G36, SL8  Barrel Retaining Nut
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    HK G36, SL8 Barrel Retaining Nut

    GSG9

    $53.00
    HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 Variants
    HKP-18252
    $53.00
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    $53.00
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  • Out Of Stock
    Used - H&K 91/G3 (7.62x51/.308) Slimline Forearm - Black - Used Excellent Condition - HKP-18317 HK91, G3 Handguard - Slimline Style - Used Excellent Condition

    HK91, G3 Handguard - Slimline Style - Used Excellent Condition

    H&K Heckler & Koch

    $0.00
    Used Authentic German Military Surplus G3 Black Slim Line Forearm With Heat Shield Used in excellent shape. For the money, these are a nice addition to the collection. Each item will fit all full forearm length HK 91, G3, PTR style firearms. Used...
    HKP-18317
    $0.00
    Out Of Stock
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    $0.00
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  • HK91, G3 Firing Pin - Titanium HK91, G3 Firing Pin - Titanium
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    HK91, G3 Firing Pin - Titanium

    HKP HK Parts

    $34.95
    HK G3, 91 & PTR Firing Pin - Titanium Grade 6 weapons grade Titanium manufacture. Made 100% in the USA A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK G3, 91 & PTR weapon system. Get the...
    HKP-17937
    $34.95
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    $34.95
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  • New - HKP MP5 40/10 Trigger Group 3 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned - HKP-17247 HK MP5 Trigger Group - 3 Position Navy 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm
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    HK MP5 Trigger Group - 3 Position Navy 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm

    HKP HK Parts

    $729.95
     HKP MP5 40/10 Trigger Group 3 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned Finally a lower cost alternative to the spendy & hard to find all German HK FBI or 0,1 ambidextrous trigger group in a 4 position Navy factory...
    HKP-17247
    $729.95
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    $729.95
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  • New - H&K MP5 9mm Burst 4 Position Trigger Group - 0,1,2,F - HKP-01421 HK MP5 Trigger Group - Burst 4 Position 0,1,2,F - 9mm
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    HK MP5 Trigger Group - Burst 4 Position 0,1,2,F - 9mm

    H&K Heckler & Koch

    $3,099.95
    HK Heckler and Koch 9mm Burst 4 Position Trigger Group 0,1,2,F for HK MP5 Each trigger group is brand new and factory fresh, directly from HK, designed specifically for push pin style factory MG's. The 4 position, 2 round burst MP5 trigger group is...
    HKP-01421
    $3,099.95
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    $3,099.95
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  • New - H&K MP5F 9mm Full Auto Bolt Carrier - HKP-00092 HK MP5F Bolt Carrier - Full Auto - 9mm
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    HK MP5F Bolt Carrier - Full Auto - 9mm

    H&K Heckler & Koch

    $1,949.95
    H&K MP5F 9mm Full Auto Bolt Carrier This carrier is the latest and greatest MP5 carrier. Will fit all HK MP5 and HK94's or clones semi or full. These are becoming increasingly hard to find. Get them while you can. This is the newer style that has...
    HKP-00092
    $1,949.95
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    $1,949.95
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  • HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm
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    HK MP5, MP5K, SP5, SP5K Magazine Catch - 9mm

    MKE

    $26.95
    HK Magazine Catch High-quality magazine catch manufactured by MKE, built to the latest style for improved reliability on factory and clone firearms. Machined from a single piece of steel for increased durability and smoother, more consistent mag...
    HKP-22549
    $26.95
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    $26.95
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  • WOOX M-LOK Rail Covers - Teardrop - GEN2 WOOX M-LOK Rail Covers - Teardrop - GEN2
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    WOOX M-LOK Rail Covers - Teardrop - GEN2

    WOOX

    $58.95 - $78.95
    WOOX GEN2 Teardrop M-LOK Rail Covers The teardrop M-LOK rail covers upgrade any M-LOK or KeyMod handguard with a warmer feel, more traction, and added heat protection, while bringing that signature wood look to your build. The GEN2 Teardrop pattern uses...
    HKP-22462-M
    $58.95 - $78.95
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    $58.95 - $78.95
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  • On Sale
    Franklin Armory BFSIII AK-C1 Standard Caliber - BLEMISHED FA Franklin Armory HKP-19833-B Franklin Armory BFSIII AK-C1 Standard Caliber - BLEMISHED FA Franklin Armory HKP-19833-B
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    AK Binary Trigger - Curved - BFSIII - BLEMISHED

    FA Franklin Armory

    Now: $385.99
    Was: $534.95
    Franklin Armory BFSIII AK-C1 Standard Caliber - 7.62x39 - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The...
    HKP-19833-B
    Now: $385.99
    Was: $534.95
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    Now: $385.99
    Was: $534.95
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  • New - HKP HK MP5K SD Handguard Conversion - HKP-22201 HK MP5K Handguard Conversion - SD Style
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    HK MP5K Handguard Conversion - SD Style

    HKP HK Parts

    $299.95
    HKP HK MP5K SD Handguard Conversion  Transform your MP5K into a stunning MP5KSD with our revolutionary MP5K SD handguard conversion! This cutting-edge drop-in handguard is expertly designed to give your standard MP5K the iconic suppressed SD look...
    HKP-22201
    $299.95
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    $299.95
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  • New - H&K CC9 Extractor Buffer - HKP-22131
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    HK CC9 Extractor Buffer

    H&K Heckler & Koch

    $5.95
    H&K CC9 Extractor Buffer Made in Germany by H&K, the extractor buffer for the CC9 cushions extractor movement and reduces wear during cycling. Compatible With: HK CC9  
    HKP-22131
    $5.95
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    $5.95
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  • Used - H&K 91/G3 (7.62x51/.308) Slimline Forearm - Jungle Green - New Old Stock - HKP-22102 HK91, G3 Slimline Handguard - Jungle Green - New Old Stock
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    HK91, G3 Slimline Handguard - Jungle Green - New Old Stock

    H&K Heckler & Koch

    $39.95
    H&K 91/G3 (7.62x51/.308) Slimline Forearm - Jungle Green - New Old Stock These are a nice addition to the collection. Compatible With: All full forearm length HK 91, G3, PTR style firearms
    HKP-22102
    $39.95
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    $39.95
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