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 - H&K HK USP/USPC Complete Mag Lockout Device - HKP-16397 HK USP, USP Compact Complete Mag Lockout Device
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    HK USP, USP Compact Complete Mag Lockout Device

    H&K Heckler & Koch

    $19.95
    H&K HK USP/USPC Complete Mag Lockout Device Easily installs and replaces the existing lanyard to the newer style lock out upgrade for the magazine lockout. Used to comply with certain state's laws and for added safety in some conditions and...
    HKP-16397
    $19.95
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  • Out Of Stock
    New - H&K HK USP/USPC Old Style Hammer - HKP-02766 HK USP, USP Compact Old Style Hammer

    HK USP, USP Compact Old Style Hammer

    H&K Heckler & Koch

    $0.00
    HK USP & USPC Variants 1-4, 9, & 10 Old Style Hammer Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W & .357 HK USP Compact .45 ACP Any USP pre-1995 with the old-style sear...
    HKP-02766
    $0.00
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  • New - H&K HK USP Series Front Sight 6.0mm - HKP-02254
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    HK USP Series Front Sight 6.0mm

    H&K Heckler & Koch

    $54.95
    HK USP Series Front Sight 6.0mm   Compatible With: HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact 45 ACP
    HKP-02254
    $54.95
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  • New - H&K HK USPC V3 Control Lever - HKP-01436 HK USP Compact V3 Control Lever
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    HK USP Compact V3 Control Lever

    H&K Heckler & Koch

    $32.95
    HK USPC V3 Control Lever Compatible With: HK USP Compact 9mm HK USP Compact 357 SIG HK USP Compact 40 S&W HK USP Compact 45 ACP
    HKP-01436
    $32.95
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  • New - H&K HK USP/45/45C Old Style Bobbed Hammer - HKP-14552
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    HK45, HK45 Compact, USP Old Style Bobbed Hammer

    H&K Heckler & Koch

    $64.95
    HK USP & USPC Bobbed Hammer - Older Style (without the cutout) This part is compatible with older USP full-size & USPC firearms that have the old-style hammer already. Perfect for those who prefer the shorter, lower profile "bobbed" hammer. This...
    HKP-14552
    $64.95
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  • Out Of Stock
    New - H&K HK MR556/416 Standard Length Quad Rail - Black - HKP-02546

    HK416, MR556 Handguard - Standard Length - Quad Rail

    H&K Heckler & Koch

    $0.00
    H&K HK MR556/416 Standard Length Quad Rail HK German HK416 & MR556 quad rail complete that includes HK 416/MR556 Handguard Screw. This handguard can also be installed on the CR556 models as well. Compatible With: HK MR556 HK 416 HK CR556
    HKP-02546
    $0.00
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  • New - H&K HK G36 Left Side Safety Lever - HKP-01875
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    HK G36 Left Side Safety Lever

    H&K Heckler & Koch

    $24.95
    HK G36 Left Side Safety Selector Lever
    HKP-01875
    $24.95
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  • New - H&K 10/30 Round HK G36 Magazine Floor Plate - Black - HKP-16381 HK G36 Magazine Floorplate - 10 and 30 Round
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    HK G36 Magazine Floorplate - 10 and 30 Round

    H&K Heckler & Koch

    $11.95
    H&K 10/30 Round HK G36 Magazine Floor Plate New factory German G36 30 round and 10 round magazine floor plate.
    HKP-16381
    $11.95
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  • New - H&K G36 (5.56/.223) 2 Round Burst Disconnector Axle - HKP-16350
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    HK G36 Disconnector Axle - 2 Round Burst

    H&K Heckler & Koch

    $10.95
    H&K G36 (5.56/.223) 2 Round Burst Disconnector Axle
    HKP-16350
    $10.95
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  • Out Of Stock
    New - MM HK UMP 9mm Conversion Kit - 16 inch Barrel - HKP-02284 HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine

    HK UMP Caliber Conversion to 9mm Kit - 16.5" Barrel - 30 Round Magazine

    Michaels Machines

    $889.95
    HK UMP 9mm Conversion Kit - US-Made UMP/USC conversion kit will convert existing USC-UMP conversions to 9mm. This is a simple drop-in conversion for those who have already done the USC-UMP conversion. The conversion parts are drop-in, with the total swap...
    HKP-02284
    $889.95
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  • New - HKP HK 21 (7.62x51/.308) Feed Mechanism Latch Lever - HKP-00235 HK21 Feed Mechanism Latch Lever
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    HK21 Feed Mechanism Latch Lever

    Michaels Machines

    $69.95
    HKP HK21 Feed Mechanism Latch Lever - 7.62x51 / .308 Replacement feed mechanism latch lever for HK21 belt-fed platforms chambered in 7.62x51 and .308. Designed to interface with the feed assembly and support proper operation of the HK21 system...
    HKP-00235
    $69.95
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  • Out Of Stock
    New - H&K 21E/23E (7.62x51/.308) & (5.56/.223) Barrel Handle - HKP-00243 H&K 21E/23E (7.62x51/.308) & (5.56/.223) Barrel Handle || HKP-00243 || HKPARTS

    HK21E, HK23E Barrel Handle - 7.62x51 / .308, 5.56 / .223

    H&K Heckler & Koch

    $79.95
    HK German Factory HK21E/23E & HK11E/13E Barrel Handle - New Factory German fiberglass/polymer extended E barrel handle. This is also considered an upgrade for older style HK21 barrel handles Compatible With: HK23E HK21E HK11E HK13E MM23E, 21E,...
    HKP-00243
    $79.95
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