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 - HKP MP5 40/10 30 Round Magazine Spring - HKP-16509
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    HK MP5 Magazine Spring - .40 S&W, 10mm - 30 Round

    HKP HK Parts

    $4.95
    HKP MP5 40/10 30 Round Magazine Spring
    HKP-16509
    $4.95
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    $4.95
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  • New - DTAC Picatinny Rail For HK Receivers - 15 Slot - HKP-17819 Picatinny Rail for HK Receivers - 15 Slot
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    Picatinny Rail for HK Receivers - 15 Slot

    DTAC Dakota Tactical

    $74.95
    Dakota Tactical Picatinny Rail To Weld To The Receiver Mil-Spec all steel picatinny rail in the white, relief cut for HK receivers & made for mounting scopes and optics to HK builds. This unit easily welds to the top of your HK receiver. Compatible...
    HKP-17819
    $74.95
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    $74.95
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  • New - Comp-Tac HK VP9 Tri-Mag Pouch - RH - Size 23 - HKP-20399 HK VP9 Tri-Mag Pouch - RH - Size 23
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    HK VP9 Tri-Mag Pouch - RH - Size 23

    Comp-Tac

    $82.95
    Tri-Mag Pouch - RH - VP9 - Size 23 The shooter's workspace is vital during a reload. Whether in competition, training or critical incident, the Comp-Tac® Tri-Mag is built to shave seconds off reload time. The clean, comfortable design is a simple way...
    HKP-20399
    $82.95
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    $82.95
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  • New - B&T HK G36C Quad Rail Handguard - Black - HKP-16896 HK G36C Quad Rail Handguard
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    HK G36C Quad Rail Handguard

    B&T Brugger & Thomet

    $269.95
    B&T handguard Quad Rail for HK G36C Swiss made B&T quad-rail (4 picatinny rails one for each side) handguard for HK G36C. Aluminum version with rail cover and sling swivel. This is the absolute best quality railed handguard available for the HK...
    HKP-16896
    $269.95
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    $269.95
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  • New - H&K HK VP9/VP9SK, VP40 Main Spring For Firing Pin - HKP-16829
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    HK VP9, VP9SK, VP40 Firing Pin Spring

    H&K Heckler & Koch

    $9.95
    H&K HK VP9/VP9SK, VP40 Main Spring For Firing Pin German HK. Compatible With: VP9 VP9 Tactical VP9SK VP40 VP40 Tactical
    HKP-16829
    $9.95
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    $9.95
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  • Used - HK German -2 Locking Roller Standard 7.98mm - Used - HKP-20600 HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used
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    HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used

    H&K Heckler & Koch

    $9.95
    HK German Locking Roller Standard 7.98mm - Used The proper roller size is essential for proper head spacing and bolt gap. Used German German-made -2 or 7.98mm roller, each roller is priced per roller. Used HK German. HK locking roller, -2, 7.98mm. HK...
    HKP-20600
    $9.95
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    $9.95
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  • Used - H&K MP5K 9mm SEF Navy Style Trigger Housing - Clipped & Pinned - USED - HKP-19850 HK MP5K Trigger Housing - SEF Navy - Clipped and Pinned - 9mm - USED
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    HK MP5K Trigger Housing - SEF Navy - Clipped and Pinned - 9mm - USED

    H&K Heckler & Koch

    $99.95
    H&K Heckler and Koch SEF Navy Style Clipped and Pinned Trigger Housing - USED for HK MP5K 9mm In used but good condition. Each German HK housing will have some handling marks, nicks and dings. Each housing is in perfectly useable condition, and each...
    HKP-19850
    $99.95
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    $99.95
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  • Out Of Stock
    New - H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring - HKP-01866

    HK G36, UMP Sear Spring

    H&K Heckler & Koch

    $8.95
    HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.  
    HKP-01866
    $8.95
    Out Of Stock
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    $8.95
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  • New - HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant - HKP-12746 HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant
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    HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant

    HKP HK Parts

    $24.95
    HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant This muzzle device is a partially milled version (not completely milled) of the factory HK birdcage style flash hider found on the factory-correct HK models of rifles...
    HKP-12746
    $24.95
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    $24.95
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  • Out Of Stock
    New - B&T HK MP5/K Magazine Loader - HKP-21687 HK MP5, MP5K, SP5, SP5K Magazine Loader

    HK MP5, MP5K, SP5, SP5K Magazine Loader

    B&T Brugger & Thomet

    $24.00
    B&T Brugger and Thomet Magazine Loader for HK MP5, MP5K and HK SP5, HK SP5K The world’s fastest magazine loader. The B&T magazine loader loads your MP5 magazines directly from the ammo box tray into the magazine in a fraction of the time...
    HKP-21687
    $24.00
    Out Of Stock
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    $24.00
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  • New - HKP HK MP5F Flat - Alternate Holes - HKP-21551 HK MP5F Receiver Flat - Alternate Holes
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    HK MP5F Receiver Flat - Alternate Holes

    HKP HK Parts

    $125.95
    HKP HK MP5F 9mm Flat - Alternate Holes MP5 receiver flat crafted by the original German tool and die maker of the LSC receiver flat using factory original German prints and specifications. This receiver features alternate holes for the correct MP5F or...
    HKP-21551
    $125.95
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    $125.95
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  • New - B&T APC9, BT APC45 Telescoping Brace/Stock Adapter - Black - HKP-18989 B&T APC9, APC45 Stock or Brace Adapter - Telescopic
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    B&T APC9, APC45 Stock or Brace Adapter - Telescopic

    B&T Brugger & Thomet

    $650.00
    B&T APC9 & APC45 Telescopic Brace/Stock Adapter The B&T telescopic brace adapter is an essential accessory to attach your favorite brace to your B&T firearm. Features: Complete adapter solution- no extra parts to buy except the brace...
    HKP-18989
    $650.00
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    $650.00
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