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 - HK G36/MR556/416 (5.56/.223) Chamber Cleaning Brush - HKP-00803
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    HK416, MR556, G36 Barrel Chamber Cleaning Brush

    HKP HK Parts

    $24.95
    HK G36 & HK SL8 German Chamber Cleaning Brush (Cleans INSIDE Chamber) More details...
    HKP-00803
    $24.95
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    $24.95
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  • New - HK G36 (5.56/.223) Cocking Handle Bushing - HKP-18368 HK G36 Cocking Handle Bushing - USA
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    HK G36 Cocking Handle Bushing - USA

    USA

    $5.95
    G36 Cocking Handle Bushing - US Made
    HKP-18368
    $5.95
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    Qty in Cart: 0
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    $5.95
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  • New - Picatinny to Harris Bipod Adapter - HKP-00909 Harris Bipod Adapter - Long - Picatinny
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    Harris Bipod Adapter - Long - Picatinny

    HKP HK Parts

    $34.95
    Harris Bipod Adapter  This mounts to any Picatinny rail and proves a stable platform to add a Harris bipod or other similar-style bipod. This will fit any Picatinny spec rail or rail system. Made in the US out of aircraft-grade aluminum and steel.
    HKP-00909
    $34.95
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    Qty in Cart: 0
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    $34.95
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  • New - HKP MP5, HK94 Cocking Tube - For Lefties - HKP-17380 HK MP5, HK94 Cocking Tube - LH
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    HK MP5, HK94 Cocking Tube - LH

    HKP HK Parts

    $119.95
    HKP MP5, HK94 Cocking Tube - For Lefties This is the one and only left handed cocking tube for the MP5/HK94 ever made and it happens to be a US manufactured part. Features include enlarged charging handle clamping pin access hole as found on the latest...
    HKP-17380
    $119.95
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    $119.95
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  • Out Of Stock
    HK VP9 Match Firing Pin Complete H&K Heckler & Koch HKP-22320 HK VP9 Match Firing Pin Complete H&K Heckler & Koch HKP-22320

    HK VP9 Match Firing Pin - Complete

    H&K Heckler & Koch

    $69.95
    Heckler and Koch Complete Firing Pin for your VP9 Match Complete firing pin assembly including firing pin, sleeve, spring, and shell spring washers. Compatible With: HK VP9 Match HK VP9 HK HK VP9L HK VP9SK
    HKP-22320
    $69.95
    Out Of Stock
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  • HK416, MR556, HK417, MR762 Selector Lever - Ambi - Right
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    HK416, MR556, HK417, MR762 Selector Lever - Ambi - Right

    H&K Heckler & Koch

    $11.95
    Heckler & Koch HK416 Ambi Safety Selector Lever Factory HK polymer right side selector lever. Compatible With: HK416 A1/A3 HK MR556 A1 HK417 HK MR762 A1
    HKP-22309
    $11.95
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    $11.95
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  • New - HK 416 .22 Magpul UCS Stock with Adapter - HKP-22196 HK416 Ultra Carbine Stock and Adapter - .22LR Pistol
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    HK416 Ultra Carbine Stock and Adapter - .22LR Pistol

    HKP HK Parts / Magpul

    $264.95
    HK 416 .22LR Pistol Magpul UCS Stock with Adapter The HK Parts UCS adapter and stock for the MP5K pairs our proven stock adapter with Magpul's UCS stock for a compact, adjustable configuration. The UCS stock features a reversible hinge for left and right...
    HKP-22196
    $264.95
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    $264.95
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  • New - H&K HK MR556/HK 416 A4/A5 Barrel Nut - HKP-21938 HK416 A4, MR556 A5 Barrel Nut
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    HK416 A4, MR556 A5 Barrel Nut

    H&K Heckler & Koch

    $60.95
    H&K HK MR556 A4/HK 416 A5 Barrel Nut This precision-machined steel barrel nut is designed specifically for H&K’s MR556 A4 and HK416 A5 rifles. It secures the barrel and supports the proprietary HK free-floating handguard system, offering...
    HKP-21938
    $60.95
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    $60.95
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  • On Sale
    New - HKP +7 HK 45C, USPC .45 ACP Magazine Extension - Black - BLEMISHED - HKP-21807-BL-B HKP +7 HK45C, USPC .45 ACP Magazine Extension - Black - BLEMISHED
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    HKP +7 HK45C, USPC .45 ACP Magazine Extension - Black - BLEMISHED

    HKP HK Parts

    Now: $37.95
    Was: $59.95
    HKP +7 HK 45C, USPC .45 ACP Magazine Extension - Black - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK Parts magazine extension +7 adds 7...
    HKP-21807-BL-B
    Now: $37.95
    Was: $59.95
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  • On Sale
    Used - H&K (7.62/.308) & (5.56/.223) Flash Hider - USED - BLEMISHED - HKP-00717-B HK33, HK53, HK93, HK91, G3 Flash Hider - Threaded 15x1 RH - USED - BLEMISHED
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    HK33, HK53, HK93, HK91, G3 Flash Hider - Threaded 15x1 RH - USED - BLEMISHED

    H&K Heckler & Koch

    Now: $7.95
    Was: $15.95
    Heckler and Koch Flash Hider for (7.62/.308) & (5.56/.223) - 15x1 RH - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Used surplus HK German...
    HKP-00717-B
    Now: $7.95
    Was: $15.95
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    Now: $7.95
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  • New - B&T 30 Round APC10/SPC10 Magazine - 10mm - HKP-21720 New - B&T 30 Round APC10/SPC10 Magazine - 10mm - HKP-21720
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    B&T APC10, SPC10 Magazine - 30 Round

    B&T Brugger & Thomet

    $100.00
    B&T 30 Round APC10/SPC10 Magazine - 10mm Compatible with any G pattern 10mm B&T firearm.  Compatible With: B&T APC10 B&T SPC10
    HKP-21720
    $100.00
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    $100.00
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  • New - Nefarious Arms HK 416/MR556 14.5" A3 Barrel - HKP-21589 HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
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    HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light

    Nefarious Arms

    $594.95
    Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting.  Grab this expertly crafted barrel for your next SBR or pistol build.  Compatible With: HK 416 A1,...
    HKP-21589
    $594.95
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    $594.95
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