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 - TPM Sig P365 +3 Magazine Extension - HKP-21278-M Midnight Bronze
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    Sig P365 +3 Magazine Extension

    Tactical Precision MFG

    Now: $18.71
    Was: $44.95
    TPM Sig P365 +3 Magazine Extension This extension is made from machined 6061 Aluminum. This magazine extension will increase capacity, increase reload speed and mag drops, and overall functionality of your pistol. Available in various colors to customize...
    HKP-21278-M
    Now: $18.71
    Was: $44.95
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    Now: $18.71
    Was: $44.95
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  • On Sale
    New - Nefarious Arms HK 416 Reaction Rod - HKP-21272 HK416 Reaction Rod
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    HK416 Reaction Rod

    Nefarious Arms

    Now: $105.95
    Was: $124.95
    Nefarious Arms - Reaction Rod - HK416  The Nefarious Arms HK416 Reaction Rod is used to securely hold the upper receiver in a bench vise so that work may be performed on the muzzle device. It is inserted through the rear of the upper receiver to...
    HKP-21272
    Now: $105.95
    Was: $124.95
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    Now: $105.95
    Was: $124.95
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  • On Sale
    New - HKP HK UMP, G36 Selector Lever - HKP-20180 HK UMP, G36 Selector Lever
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    HK UMP, G36 Selector Lever

    HKP HK Parts

    Now: $6.95
    Was: $8.95
    HK UMP & G36 Left Side Safety Selector Lever With Axle - Replacement selector for HK PARTS TRIGGER GROUP HK Parts selector lever for the left side of our own 2 position FBI U.S housing for the UMP pictogram lowers. Compatible With: U.S FBI 2...
    HKP-20180
    Now: $6.95
    Was: $8.95
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    Now: $6.95
    Was: $8.95
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  • On Sale
    New - RCM HK P30SK & HK P2000SK 9mm Tactical Barrel - Threaded 1/2x28 RH - HKP-19306 HK P30SK, P2000SK Tactical Barrel - 9mm - 3.89" - Threaded 1/2x28 RH
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    HK P30SK, P2000SK Tactical Barrel - 9mm - 3.89" - Threaded 1/2x28 RH

    RCM

    Now: $201.95
    Was: $225.00
    RCM HK P30SK & HK P2000SK 9mm Tactical Barrel - Threaded 1/2x28 RH   Each HK P2000SK and P30SK tactical barrel is meticulously crafted from ordnance grade steel, heat treated, and finished with a durable nitride coating. This is the finest...
    HKP-19306
    Now: $201.95
    Was: $225.00
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    Now: $201.95
    Was: $225.00
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  • Out Of Stock
    New - H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring - HKP-16835

    HK VP9, VP9SK, VP40 Elbow Spring, Drop Safety

    H&K Heckler & Koch

    $6.95
    H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring   Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40
    HKP-16835
    $6.95
    Out Of Stock
    Qty in Cart: 0
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    $6.95
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  • On Sale
    New - 13 Round HK 45/45 Tactical .45 ACP Magazine - Red - HKP-18386 HK45, HK45T Magazine - .45 ACP - 13 Round - Red
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    HK45, HK45T Magazine - .45 ACP - 13 Round - Red

    HKP HK Parts

    Now: $71.95
    Was: $89.95
    13 Round HK 45/45 Tactical .45 ACP Magazine - Red HK45 & HK45 Tactical +3 magazine extension coupled with a new HK German 10 round HK45 magazine. Each unit is then fully assembled as a 13 round HK45, HK45 Tactical magazine. Ideal for concealed carry,...
    HKP-18386
    Now: $71.95
    Was: $89.95
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    Now: $71.95
    Was: $89.95
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  • New - HK 91, G3, PTR Grip Frame SEF- Metal HK German - HKP-17637 HK91, G3, PTR Grip Frame SEF- Metal HK German
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    HK91, G3, PTR Grip Frame SEF- Metal HK German

    $189.95
    HK91, G3, PTR-91 Style Metal Grip Frame SEMI Each German HK housing started out as a factory HK German select fire metal housing. Each housing then had the housing professionally modified by welding in a factory correct semi auto shelf. After the...
    HKP-17637
    $189.95
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    $189.95
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  • On Sale
    New - Magpul HK 91 MOE PR Stock - HKP-21198 HK91, G3 Stock - MOE PR
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    HK91, G3 Stock - MOE PR

    Magpul

    Now: $149.95
    Was: $199.95
    Magpul HK91, G3 MOE PR Stock The MOE PR is a full-size carbine stock that blends the simplicity of the legacy MOE carbine stock with design lines reminiscent of the PRS Lite.  Features: Sloping cheek weld Non-slip rubber butt-pad for impact...
    HKP-21198
    Now: $149.95
    Was: $199.95
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    Now: $149.95
    Was: $199.95
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  • New - RCM HK 53 Full Auto Bolt Carrier US - HKP-20538 HK53 Bolt Carrier - Full Auto - RCM
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    HK53 Bolt Carrier - Full Auto - RCM

    RCM

    $389.99
    RCM HK53 Full Auto Bolt Carrier US manufactured new-style HK53 factory bolt carrier. The finest HK53 carrier ever made with the latest & greatest German inspired improvements and updates. Ideal for 556/.223 & .300 BLK firearms.   This US...
    HKP-20538
    $389.99
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    $389.99
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  • Used - H&K HK33/HK93 A2 Black Buttstock - Surplus - HKP-20133 HK33, HK93 A2 Buttstock - Surplus
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    HK33, HK93 A2 Buttstock - Surplus

    H&K Heckler & Koch

    $99.95
    H&K HK33/HK93 A2 Black Buttstock - Surplus HK33 complete surplus buttstock assembly in good condition. In perfect working order but will have signs of use. This is the original buttstock for the HK33A2. Compatible With: HK33 HK93 HK53 V33, 53, C93
    HKP-20133
    $99.95
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    $99.95
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  • Used - H&K 91/G3 (7.62x51/.308) Full Auto Bolt Carrier - Surplus - HKP-01952 HK91, G3 Bolt Carrier - Full Auto - Surplus
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    HK91, G3 Bolt Carrier - Full Auto - Surplus

    H&K Heckler & Koch

    $149.95
    HK G3 Factory Full Auto Bolt Carrier - German German HK 70'- 80's production used surplus bolt carrier with locking lever, spring, and axle pin installed. Most are NOT date-coded on the top of the carrier. Most will be marked on the side or, more...
    HKP-01952
    $149.95
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  • Out Of Stock
    New - HKP HK MP5 9mm Flash Hider - 3-Lug - HKP-17228 HK MP5, MP5K Flash Hider - 3-Lug - 9mm

    HK MP5, MP5K Flash Hider - 3-Lug - 9mm

    HKP HK Parts

    $99.95
    HKP HK MP5 9mm Flash Hider - 3-Lug Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels found on in...
    HKP-17228
    $99.95
    Out Of Stock
    Qty in Cart: 0
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    $99.95
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