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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  • Used - H&K HK G3, HK 91, PTR Wood Stock - HKP-19275 HK91, G3, PTR Stock - Wood
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    HK91, G3, PTR Stock - Wood

    H&K Heckler & Koch

    $199.95
    Wood Stock - Used - Excellent Shape - HK G3, 91, PTR Complete rear stock for HK91/G3, PTR. These stock sets were in use with the German military and come used in varying degrees of condition ranging from very good to excellent shape overall.  A rare...
    HKP-19275
    $199.95
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    $199.95
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  • New - Meprolight HK USP Night Sight Set - Green - HKP-01906
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    Meprolight HK USP Night Sight Set - Green

    Meprolight

    $99.99
    Meprolight HK USP Night Sight Set - Green Features: Unequaled Light Performance Brightest Night Sights Available Today Used by Military & Law Enforcement All Tru-Dot sights are covered by a 12-year usable illumination warranty to the original...
    HKP-01906
    $99.99
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    $99.99
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  • On Sale
    Used - Tin with Flares - 26.5MM - HKP-20794 Tin Case with Flares - 26.5MM
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    Tin Case with Flares - 26.5MM

    Other

    Now: $699.95
    Was: $899.95
    Tin Case with Flares - 26.5MM   Sealed tin with 14 10-packs of flares for a total of 140 flares per tin.    Each 10-pack of Polish military flares include 2 of each of the following: White Fire, Red Fire, Green Fire, Blue Smoke, and Red...
    HKP-20794
    Now: $699.95
    Was: $899.95
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    Now: $699.95
    Was: $899.95
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  • New - H&K HK416 A5 Factory German Extended Castle Nut - HKP-19164
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    HK416A5 Castle Nut - Extended

    H&K Heckler & Koch

    $75.95
    H&K HK416 A5 Factory German Extended Castle Nut Original HK Factory German steel 416 A5 Extended Castle Nut. Perfect for MR556, HK 416 A5 builds, or upgrades. 
    HKP-19164
    $75.95
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    $75.95
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  • New - H&K 12 Round HK USPC, HK P2000 .40 S&W Magazine - Black - HKP-02244 HK USPC, P2000 Magazine .40 S&W - 12 Round
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    HK USPC, P2000 Magazine .40 S&W - 12 Round

    H&K Heckler & Koch

    $58.95
    12 Round HK USPC & HK P2000 .40 S&W Magazine Low-profile magazine for concealed carry or a lower profile. Each is brand new old stock and may or may not be LEO marked on the magazine body. Compatible With: HK USP Compact .40 S&W HK P2000 .40...
    HKP-02244
    $58.95
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    $58.95
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  • On Sale
    New - SB Tactical FS1913 Folding Pistol Stabilizing Brace - Black - HKP-19132 FS1913 Stabilizing Brace - Folding
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    FS1913 Stabilizing Brace - Folding

    SB Tactical

    Now: $207.95
    Was: $260.99
    SB Tactical FS1913 Folding Pistol Stabilizing Brace A low-profile, left side-folding, strut design compatible with all platforms utilizing an M1913 interface at the rear of the receiver. The FS1913 is a complete assembly offering pull-through opening and...
    HKP-19132
    Now: $207.95
    Was: $260.99
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    Now: $207.95
    Was: $260.99
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  • New - SB Tactical HK UMP & B&T APC Folding Brace - Black - HKP-18258 HK UMP & B&T APC Folding Brace
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    HK UMP & B&T APC Folding Brace

    SB Tactical

    $79.95
    SB Tactical HK UMP Omega / APC Folding Brace SB tactical folding brace for the HK UMP, Omega UMP & B&T APC offerings. This is a brand new offering that was made for the new release of the Omega UMP pistol offerings now hitting the market...
    HKP-18258
    $79.95
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    $79.95
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  • New - H&K HK MR556/416 Ejection Port Spring - HKP-02616
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    HK416, MR556 Ejection Port Spring

    H&K Heckler & Koch

    $9.95
    H&K HK MR556/416 Ejection Port Spring Compatible With: HK MR556 HK 416
    HKP-02616
    $9.95
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    $9.95
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  • New - KCI 30 Round MP5 9mm Magazine - 5 Pack - HKP-22057 HK MP5 Magazine - 9mm - 30 Round - 5 Pack
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    HK MP5 Magazine - 9mm - 30 Round - 5 Pack

    KCI

    $184.95
    KCI 30 Round MP5 9mm Magazine - 5 Pack Features: Latest generation and factory fresh, individually sealed magazine 30-round capacity 9mm caliber marked (9mm x 19) Curved for more reliable feeding with steel chrome follower All steel...
    HKP-22057
    $184.95
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    $184.95
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  • New - HKP .40 S&W Micro Comp - Threaded 9/16x24 - HKP-19956 HKP .40 S&W Micro Comp - Threaded 9/16x24
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    HKP .40 S&W Micro Comp - Threaded 9/16x24

    HKP HK Parts

    $29.95
    HKP .40 S&W Micro Comp - Threaded 9/16x24 The HK Parts Micro Comp & Thread Protector is a lightweight, fully functional device that combines the benefits of a compensator and a thread protector. Designed for easy attachment to any factory spec...
    HKP-19956
    $29.95
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    $29.95
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  • New - HKP +7 HK VP9/HK P30 Magazine Extension Kit - HKP-19456-M HK VP9, P30 Magazine Extension Kit - +7
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    HK VP9, P30 Magazine Extension Kit - +7

    HKP HK Parts

    $54.95
    HKP +7 HK VP9/P30 Magazine Extension Kit The HK Parts +7 magazine extension kit adds 7 additional rounds to the HK VP9/P30 magazine with the simple swap of the floor plate & mag spring. Each kit includes the +7 extension and an enhanced spring. This...
    HKP-19456-M
    $54.95
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    $54.95
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  • New - H&K HK MR762/417/G28 Adjustable Buttstock Set - Black - HKP-16761 HK417, MR762, G28 Buttstock Set - Adjustable
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    HK417, MR762, G28 Buttstock Set - Adjustable

    H&K Heckler & Koch

    $599.95
    HK G28 Fully Adjustable Stock For The MR762 & HK 417, G28 The hard to find elusive HK G28 adjustable stock kit complete with the upgraded parts needed to convert a stock MR762 or HK417 to allow this stock system to be used. HK German manufacture and...
    HKP-16761
    $599.95
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    $599.95
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