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 P30/45/USP/USPC/P2000 Hammer Spring - HKP-01804
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    HK45, P30, USP, USP Compact, P2000 Hammer Spring

    H&K Heckler & Koch

    $9.95
    Hammer Spring This is the stock hammer spring for many P30 models and is used for the heavy TGS and heavy and light LEM conversions on the USP, USPC, P30 & HK45 models. Compatible With: USP Full Size LEM & V4 USP Compact LEM &...
    HKP-01804
    $9.95
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  • New - PTR Triple Frame/Front Sight Tower for PTR Barrels - HKP-16325
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    HK PTR91 Triple Frame Sight Tower

    H&K Heckler & Koch

    $49.95
    PTR Triple Frame/Front Sight Tower for PTR Barrels This is a German HK triple frame that has been machined to accept the larger profile of the PTR barrels. Ready to use on your PTR91 barrels. Each sight tower includes machined front sight tower to fit...
    HKP-16325
    $49.95
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  • New - H&K MP5 40/10 Bolt Hold Torsion Spring - HKP-00455
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    HK MP5 Bolt Hold Torsion Spring - .40 S&W / 10mm

    H&K Heckler & Koch

    $39.95
    MP5 40, 10 Bolt Hold Torsion Spring This is the factory spring used to activate the bolt hold-open lever. Great spare and needed part to have on hand.
    HKP-00455
    $39.95
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  • New - MP5, MP5K 9mm Contact Piece For Paddle Mag Release - German - HKP-00118 HK MP5, MP5K Contact Piece for Paddle Mag Release  - 9mm
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    HK MP5, MP5K Contact Piece for Paddle Mag Release - 9mm

    H&K Heckler & Koch

    $59.95
    MP5, MP5K 9mm Contact Piece For Paddle Mag Release - German This is the real deal NOT the .308 or .223 contact piece. Hard to find factory-correct, brand-new, latest production German HK 9mm contact piece. Compatible With: MP5, SP5, 94, SP5 MP5K, SP5K,...
    HKP-00118
    $59.95
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  • Out Of Stock
    HK USP Flat Tracker - Volker Precision HK USP Flat Tracker - Volker Precision

    HK USP Flat Tracker - Volker Precision

    Volker

    $112.95
    HK USP Full Size Flat Tracker - Volker Precision Volker Precision flat tracker for full size USP models in all calibers.   Available exclusively at HK Parts Compatible With: HK USP9, USP40, USP45
    HKP-22447
    $112.95
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  • New - H&K HK CC9 Floor Plate & Locking Plate Set - HKP-22101 HK CC9 Magazine Floorplate and Locking Plate Set - 9mm - 12 Round - Extended
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    HK CC9 Magazine Floorplate and Locking Plate Set - 9mm - 12 Round - Extended

    H&K Heckler & Koch

    $29.95
    H&K HK CC9 Extended Floor Plate & Locking Plate Set Factory HK replacement extended floor plate and locking plate and spring set for the CC9 magazine. The best option to have as a back up for used and worn out magazines.  Compatible...
    HKP-22101
    $29.95
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  • New - HKP HK MP5/SP5 Raised MRO Optic Mount - HKP-21891 HK MP5, SP5 Optic Mount - Raised - Trijicon MRO
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    HK MP5, SP5 Optic Mount - Raised - Trijicon MRO

    HKP HK Parts

    $134.95
    HKP HK MP5/SP5 Raised Trijicon MRO Optic Mount The HKP Raised MRO Optic Mount was designed to give the shooter full view of both the MRO and the factory sights. The MRO mounting base is elevated enough to give an unobstructed view through the factory...
    HKP-21891-M
    $134.95
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  • New - Magpul M-Lok Tape Switch - Surefire ST - HKP-21480 Surefire ST Mounting Plate - Tape Switch - M-LOK
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    Surefire ST Mounting Plate - Tape Switch - M-LOK

    Magpul

    $14.95
    Magpul M-Lok Tape Switch - Surefire ST The M-LOK tape switch mounting plate is designed to attach surefire ST pressure pads on M-LOK compatible systems. It is molded of the same high quality polymer as other Magpul products, combining light weight with...
    HKP-21480
    $14.95
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  • New - HKP HK VP, HK P30, HK USPC, HK P2000 9mm Magazine Follower - Black - HKP-20594 HK VP9, P30, USPC, P2000 Magazine Follower - 9mm
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    HK VP9, P30, USPC, P2000 Magazine Follower - 9mm

    HKP HK Parts

    $29.95
    HKP HK Parts 9mm Magazine Follower for HK VP, HK P30, HK USPC, HK P2000  A great replacement item for the stock follower. Made from aircraft-grade black Teflon hard coat anodized aluminum CNC machined from a solid billet. Compatible With: VP9,...
    HKP-20594
    $29.95
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  • New - RCM HK USP .45 ACP Barrel - Threaded 16x1 LH - HKP-20130 HK USP Barrel - .45 ACP - 5.09" - Threaded 16x1 LH
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    HK USP Barrel - .45 ACP - 5.09" - Threaded 16x1 LH

    RCM

    $250.00
    RCM HK USP .45 ACP Barrel - Threaded 16x1 LH HK USP .45 ACP & HK USP Tactical .45 ACP threaded barrel for use with a wide variety of flash hiders & sound suppressors. This is a special offering as a factory USP Tactical.45 ACP barrel is threaded...
    HKP-20130
    $250.00
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  • New - HKP HK P7 Bench Mat - HKP-17282
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    HK P7 Bench Mat

    HKP HK Parts

    $13.95
    HKP HK P7 Bench Mat This isn't your ordinary gun cleaning mat! Show your pride for your HK P7 bench mat firearm while using our high quality neoprene rubber backed and cloth topped gun cleaning mat to protect your gun bench, desk, kitchen table, or...
    HKP-17282
    $13.95
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  • Out Of Stock
    New - RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 - HKP-17744 HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded  9/16x24

    HK USP Tactical Barrel - .40 S&W - 4.86" - Threaded 9/16x24

    RCM

    $225.00
    RCM HK USP .40 S&W Tactical Barrel - Threaded 9/16x24 Each barrel is meticulously crafted from ordnance-grade steel, heat-treated, and finished with a durable nitride coating. This is the best replacement barrel for the HK USP full-size .40 S&W...
    HKP-17744
    $225.00
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