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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  • On Sale
    New - HK Parts MP5/K SP5/K Folding Stock Buffer - HKP-20833 HK MP5, MP5K, SP5, SP5K Folding Stock Buffer
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    HK MP5, MP5K, SP5, SP5K Folding Stock Buffer

    HKP HK Parts

    Now: $7.95
    Was: $9.95
    HK Parts Folding Stock Buffer for HK MP5, SP5, MP5K, SP5K This item used to replace the factory HK buffer on MP5K folding stocks and end cap. This is only usable on the factory OEM stock and end cap. This buffer can also be used as a replacement buffer...
    HKP-20833
    Now: $7.95
    Was: $9.95
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    Now: $7.95
    Was: $9.95
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  • On Sale
    New - HKP HK VP9/VP9L EPS Optic Plate - HKP-21333 HK VP9 Optic Plate - Holosun EPS - Red Dot Pistol Mount
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    HK VP9 Optic Plate - Holosun EPS - Red Dot Pistol Mount

    HKP HK Parts

    Now: $39.95
    Was: $49.95
    HKP HK VP9 Holosun EPS Optic Plate Each plate is CNC machined from a solid billet of ordnance grade steel, deburred, tumbled and Cerakoted for the ultimate in durability and appearance. Each unit comes with 2 X T20 steel Torx Plus screws for mounting the...
    HKP-21333
    Now: $39.95
    Was: $49.95
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    Was: $49.95
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  • Out Of Stock
    New - B&T HK MP5K, SP5K Telescopic Brace - HKP-19861 HK MP5K, SP5K Telescopic Brace

    HK MP5K, SP5K Telescopic Brace

    B&T Brugger & Thomet

    $650.00
    B&T Telescopic Brace for HK MP5K, SP5K B&T telescopic brace for HK SP5K/MP5K and clones Specifications: Length adjustable in 5 positions Includes replaceable elastomer rubber buffer Just add your favorite tailhook style device and you are good...
    HKP-19861
    $650.00
    Out Of Stock
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    $650.00
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  • New - H&K HK 416/MR556 Mil-Spec Factory German E2 Rear Stock - Black - HKP-01913 HK416, MR556 E2 Buttstock - Mil-Spec
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    HK416, MR556 E2 Buttstock - Mil-Spec

    H&K Heckler & Koch

    $199.95
    H&K HK416, MR556 Mil-Spec Factory German E2 Stock The HKE2 Buttstock fits mil-spec buffer tubes (receiver extensions) for M4/AR15 type weapons and has the concave style removable buttpad installed. Features: Ergonomic cheek weld for improved firing...
    HKP-01913
    $199.95
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    $199.95
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  • On Sale
    New - HKP 2 Point Leather & Cotton Sling - HKP-21320-M Sling - 2 Point - Leather and Cotton
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    Sling - 2 Point - Leather and Cotton

    HKP HK Parts

    Now: $47.95
    Was: $59.95
    2 Point Leather & Cotton Sling  Designed to replicate the original, out of production, German HK offering. Each sling is handcrafted in the US by a German artisan using quality US leather and hardware.  Each sling is approximately 48" long...
    HKP-21320-M
    Now: $47.95
    Was: $59.95
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    Was: $59.95
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  • On Sale
    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Bundesadler HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Bundesadler
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    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - Bundesadler

    Zenith

    Now: $38.95
    Was: $43.95
    Zenith 30 Round HK MP5 Bundesadler Magazine The Bundesadler laser-etched into a Zenith magazine. Limited run so get them while you can! Application of oil is recommended depending on climate. Features: Durable electro-plated black finish for exceptional...
    HKP-20913
    Now: $38.95
    Was: $43.95
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    Now: $38.95
    Was: $43.95
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  • On Sale
    New - SB Tactical HK MP5 .22LR Folding Brace w/Billet Adapter - HKP-19951 HK MP5 Folding Brace - .22LR - Billet Adapter
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    HK MP5 Folding Brace - .22LR - Billet Adapter

    HKP HK Parts / SB Tactical

    Now: $179.95
    Was: $224.95
    SB Tactical Side Folding Brace with Billet Adapter for the HK MP5 .22 model: This is not your standard SB Tactical side folding brace.  We pair the standard SBT brace with our own billet aluminum brace adapter to give you a more robust option over...
    HKP-19951
    Now: $179.95
    Was: $224.95
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    Now: $179.95
    Was: $224.95
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  • On Sale
    New - B&T HK MP5, SP5 Telescopic Stock - HKP-19352 HK MP5, SP5 Telescopic Stock
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    HK MP5, SP5 Telescopic Stock

    B&T Brugger & Thomet

    Now: $584.95
    Was: $650.00
    B&T's Brugger and Thomet Telescopic Stock for HK MP5 B&T offers a selection of shoulder stocks for the HK MP5, SP5, MP5SD, MKE AP5, ZF-5 in order to adapt the weapon to the needs of its operator. Due to the in 5 positions length adjustable...
    HKP-19352
    Now: $584.95
    Was: $650.00
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    Now: $584.95
    Was: $650.00
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  • New - H&K HK VP9/VP9SK, HK VP40 Clamping Sleeve For Drop Safety Axle - HKP-16838
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    HK VP9, VP9SK, VP40 Clamping Sleeve For Drop Safety Axle

    H&K Heckler & Koch

    $6.95
    Clamping Sleeve For Drop Safety Axle VP9, VP9SK & VP40 This is the roll pin that goes in the side of the slide and retains the drop safety.
    HKP-16838
    $6.95
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    $6.95
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  • Out Of Stock
    New - H&K USP/P30/HK45 New Style Firing Pin Block - HKP-01285 HK P30, HK45, USP Firing Pin Block - New Style

    HK P30, HK45, USP Firing Pin Block - New Style

    H&K Heckler & Koch

    $16.95
    H&K USP/P30/HK45 New Style Firing Pin Block A factory Heckler and Koch part. Compatible With: HK USP 45, 40 & 9mm HK USP Tactical, Elite, Expert HK USP Compact 9mm, .40 & .45 HK USPC Tactical 9mm, .40 & .45 HK P30, P30L, P30S &...
    HKP-01285
    $16.95
    Out Of Stock
    Qty in Cart: 0
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    $16.95
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  • Used - H&K G3 Large Buffer Screw - HKP-16981
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    HK G3 Large Buffer Screw

    H&K Heckler & Koch

    $1.95
    HK G3 Large Buffer Screw This is the screw that screws in the back of the buffer. This is also needed to install the Magpul PRS2 stock. Used- in good, working condition.
    HKP-16981
    $1.95
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    Qty in Cart: 0
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    $1.95
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  • New - H&K HK VP9, HK VP40 Half Shell Spring Washer - Black - HKP-16832 HK VP9, VP40 Spring Bushing - Washer
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    HK VP9, VP40 Spring Bushing - Washer

    H&K Heckler & Koch

    $9.95
    H&K HK VP9, HK VP40 Half Shell Spring Washer 2 units needed for complete set. Brand new factory German HK. This item is the item that cradles the firing pin and is covered by the firing pin sleeve and spring assembly. Compatible With: HK VP9 HK...
    HKP-16832
    $9.95
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    Qty in Cart: 0
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    $9.95
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