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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  • Out Of Stock
    New - HKP HK UMP Stock Block - B Push Pin - HKP-21249 HK UMP Stock Block B Push Pin

    HK UMP Stock Block B Push Pin

    HKP HK Parts

    $34.95
    Stock Block B Sling Pin With Loop washer & Quick Pull Pin for UMP/USC (.40 S&W/ .45 ACP/9mm)   
    HKP-21249
    $34.95
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  • On Sale
    New - RCM HK VP9 Match 9mm Barrel - Threaded 13.5x1 LH - HKP-21068 HK VP9 Match Barrel - 9mm - 6.1" - Threaded 13.5x1 LH
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    HK VP9 Match Barrel - 9mm - 6.1" - Threaded 13.5x1 LH

    RCM

    Now: $222.95
    Was: $262.50
    RCM HK VP9 Match 9mm Barrel - Threaded 13.5x1 LH RCM threaded match barrel for the HK VP9 Match. Machined from fully heat-treated 4140 ordnance-grade steel and finished inside and out with a nitrided surface for durability and corrosion resistance. This...
    HKP-21068
    Now: $222.95
    Was: $262.50
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    Was: $262.50
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  • On Sale
    New - TPM 6.5mm Titanium Full Port Muzzle Brake - Threaded 5/8x24 - HKP-20768 Full Port Muzzle Brake - 6.5mm - Threaded 5/8x24" - Titanium
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    Full Port Muzzle Brake - 6.5mm - Threaded 5/8x24" - Titanium

    Tactical Precision MFG

    Now: $42.95
    Was: $84.99
    TPM 6.5mm Titanium Full Port Muzzle Brake - Threaded 5/8x24 This lightweight titanium muzzle brake is designed by a master gunsmith and is one of the best on the market. The spiral port outlets along with the parabolic internal taper significantly...
    HKP-20768
    Now: $42.95
    Was: $84.99
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  • Used - HK G3 .22 20 Round Conversion Magazine - USED - HKP-20750 HK G3 .22 20 Round Conversion Magazine - USED
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    HK G3 .22 20 Round Conversion Magazine - USED

    $199.95
    HK G3 .22 20 Round Conversion Magazine - USED HK .22 caliber conversion kit 20-round magazine for The G3/91. Ideal for those that have the caliber conversion kit and wants to stack up on spare magazines. Condition is used to like new in the gray paint...
    HKP-20750
    $199.95
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  • Out Of Stock
    New - HKP Mark 23 .45 ACP Thread Cap - Threaded 16x1 RH - HKP-20609 HK Mark 23 Thread Cap - .45 ACP - Threaded 16x1 RH

    HK Mark 23 Thread Cap - .45 ACP - Threaded 16x1 RH

    HKP HK Parts

    $44.95
    H&K Mark 23 .45 ACP Thread Cap - Threaded 16x1 RH Introducing the new US HK Mark 23 SOCOM Thread Protector, designed for all H&K Mark 23/SOCOM barrels threaded 16x1 RH. This essential accessory protects your valuable threaded barrel and...
    HKP-20609
    $44.95
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    $44.95
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  • On Sale
    New - Comp-Tac VP9 Single Tri-Mag Pouch - PLM - HKP-20358 HK VP9 Tri-Mag Pouch - Single - PLM
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    HK VP9 Tri-Mag Pouch - Single - PLM

    Comp-Tac

    Now: $35.95
    Was: $39.95
    Comp-Tac VP9 Single Tri-Mag Pouch - PLM The Tri-Mag single is an easy way to carry a spare magazine pouch. The Tri-Mag single comes in two different configurations: with a push-button locking mount (PLM) or with a secure quick release (SQR) molle mount...
    HKP-20358
    Now: $35.95
    Was: $39.95
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  • New - H&K HK MR556/HK 416 9" M-LOK Handguard - Black - HKP-19670 HK416, MR556 Handguard - 9" - M-LOK
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    HK416, MR556 Handguard - 9" - M-LOK

    H&K Heckler & Koch

    $244.95
    H&K HK MR556/HK 416 9" M-LOK Handguard - Black New HK German manufactured forearm for the HK 416 and MR556 firearm. Comes exactly as pictured.  Compatible With: HK MR556 HK 416
    HKP-19670
    $244.95
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  • Out Of Stock
    New - HKP HK UMP 2 Position Lower Grip Frame - Black - HKP-19382 HK UMP 2 Position Lower Grip Frame

    HK UMP 2 Position Lower Grip Frame

    HKP HK Parts

    $179.95
    UMP - 2 Position Lower Grip Frame New UMP Lower. 2 position settings (S,F). Perfect for all your own internals. This item is ideal for the USC to UMP conversion or to keep as a spare. Each lower fits & works with the 45, 40 & 9mm calibers using...
    HKP-19382
    $179.95
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  • On Sale
    HK G36, G36C, G36K Magwell HK G36, G36C, G36K Magwell
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    HK G36, G36C, G36K Magwell

    HKP HK Parts

    Now: $39.95
    Was: $49.95
    Magazine Well - Magwell FDE & RAL8K - HK G36 Allows use of all factory G36 and Magpul G36 magazines. This magwell fits all 30, 10, and 100 round magazines and drums. Compatible With: G36, G36K, G36C In-spec clones and custom builds
    HKP-19300-M
    Now: $39.95
    Was: $49.95
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  • Out Of Stock
    New - HK G36C Forearm w/ Tri Rail Set Included - HKP-00618 HK G36C Handguard with Tri Rail Set

    HK G36C Handguard with Tri Rail Set

    H&K Heckler & Koch

    $199.95
    HK Heckler and Koch Tri-Rail Handguard Forearm for HK G36C New HK German Factory G36C Forearm with both left and right side rails, bottom rail, and hand stop included. This new style forearm also comes with the heat shield installed. Forearm is made in...
    HKP-00618
    $199.95
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  • Out Of Stock
    On Sale
    New - Laserguard HK VP9/VP9SK, HK VP40 LG-499 - Green - HKP-18567 HK VP9, VP9SK, VP40 Laserguard - LG-499 - Green

    HK VP9, VP9SK, VP40 Laserguard - LG-499 - Green

    Crimson Trace

    Now: $256.95
    Was: $309.95
    LG-499 LASERGUARD VP9, VP9SK, VP40 - Green The LG-499G Laserguard® is a powerful green laser sight designed for the Heckler and Koch® (HK®) VP series of pistols including: VP9, VP9SK and VP40. Featuring a 5mWpeak, 515-532nm, Class 3R green...
    HKP-18567
    Now: $256.95
    Was: $309.95
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  • On Sale
    New - B&T TP9 Telescopic Brace - Black - HKP-18945 B&T TP9 Telescopic Brace
    Add to Cart

    B&T TP9 Telescopic Brace

    B&T Brugger & Thomet

    Now: $430.95
    Was: $507.95
    B&T TP9 Telescopic Brace B&T Telescopic Arm Brace Adapter for a B&T TP9 pistol. Tailhook (BT-20422) is sold separately, not included. Compatible With: B&T TP9 ***Stabilizing braces sold by HK Parts are designed and intended for...
    HKP-18945
    Now: $430.95
    Was: $507.95
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    Now: $430.95
    Was: $507.95
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