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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    HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny
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    HK MP5K, SP5K ACR Folding Stock With Adapter - Picatinny

    F5 MFG

    $207.16 - $324.95
    HK MP5K, SP5K ACR Folding Stock w/Adapter - Picatinny The HKP picatinny end cap with the F5 ACR stock allows users to easily swap this, and other stocks, between their K and other platforms.  This...
    HKP-22351-M
    $207.16 - $324.95
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  • Out Of Stock
    HK CC9 Magazine Follower - 10 and 12 Round HK CC9 Magazine Follower - 10 and 12 Round
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    HK CC9 Magazine Follower - 10 and 12 Round

    H&K Heckler & Koch

    $5.95
    H&K CC9 - Magazine Follower - 10 and 12 Round Magazines Follower for HK CC9 10-round and 12-round magazines. Manufactured in Germany by H&K. Compatible With:
    HKP-22146
    $5.95
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    $5.95
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  • New - H&K CC9 Extractor Roll Pin - HKP-22132
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    HK CC9 Extractor Roll Pin

    H&K Heckler & Koch

    $5.95
    H&K CC9 Extractor Roll Pin Made in Germany, the extractor roll pin for the CC9 secures the extractor to the slide.
    HKP-22132
    $5.95
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  • On Sale
    New - SB Tactical SBA3 5 Position Adjustable Stabilizing Brace - HKP-21927 HK416, MR556 Stabilizing Brace - SBA3 5 Position Adjustable
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    HK416, MR556 Stabilizing Brace - SBA3 5 Position Adjustable

    SB Tactical

    Now: $98.96
    Was: $109.95
    SB Tactical SBA3 5 Position Adjustable Stabilizing Brace The SBA3™ is a minimalist, 5-position adjustable stabilizing brace designed for platforms that accept a mil-spec carbine receiver extension...
    HKP-21927
    Now: $98.96
    Was: $109.95
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    Was: $109.95
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  • Out Of Stock
    On Sale
    Used - H&K UMP (.45 ACP) 25 Round Magazine - German LEO Markings - LIKE NEW - HKP-17917-B HK UMP Magazine - 25 Round - .45 ACP - German LEO Markings - LIKE NEW
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    HK UMP Magazine - 25 Round - .45 ACP - German LEO Markings - LIKE NEW

    H&K Heckler & Koch

    Now: $129.26
    Was: $229.95
    HK Heckler and Koch .45 ACP 25 Round Magazine for HK UMP - German LEO Markings - LIKE NEW Like-new PD trade in HK German UMP .45 cal 25 Round Factory Magazines. These magazines will fit all UMP...
    HKP-17917-B
    Now: $129.26
    Was: $229.95
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    Now: $129.26
    Was: $229.95
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  • On Sale
    New - HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special - HKP-99116 HK MP5 Locking Piece - 100 Degree - Standard Oversized - BLEMISHED - Gunsmith Special
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    HK MP5 Locking Piece - 100 Degree - Standard Oversized - BLEMISHED - Gunsmith Special

    USA

    Now: $7.46
    Was: $33.95
    HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking...
    HKP-99116
    Now: $7.46
    Was: $33.95
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    Was: $33.95
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  • B&T APC Folding Stock - MBT B&T APC Folding Stock - MBT
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    B&T APC Folding Stock - MBT

    B&T Brugger & Thomet

    $365.00
    B&T MBT Folding Stock for APC (Stock Only, No Hydraulic Buffer)  Features: 8 position length adjustment Telescoping cheek riser w/ 3 position height adjustment
    HKP-21738
    $365.00
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    $365.00
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  • On Sale
    New - HKP MP5K 10mm Pistol Build Kit - HKP-21533 HK MP5K Parts Kit - 10mm - Pistol Build
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    HK MP5K Parts Kit - 10mm - Pistol Build

    HKP HK Parts

    Now: $1,700.96
    Was: $1,889.95
    HKP MP5K 10mm Pistol Build Kit MP5K 10mm complete pistol build kit. Featuring the latest in highest quality components for an unparalleled build. Equipped with a 9/16x24 3-lug threaded barrel to...
    HKP-21533
    Now: $1,700.96
    Was: $1,889.95
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  • On Sale
    New - B&T G36 (5.56/.223) Flash Hider with Interface for Rotex - HKP-21531 HK G36 Flash Hider with Interface for Rotex
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    HK G36 Flash Hider with Interface for Rotex

    B&T Brugger & Thomet

    Now: $130.50
    Was: $144.99
    B&T G36 (5.56/.223) Flash Hider with Interface for Rotex Compatible With: HK G36
    HKP-21531
    Now: $130.50
    Was: $144.99
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    Was: $144.99
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  • Out Of Stock
    New - B&T HK MP5K - MBT Stock - HKP-21421 HK MP5K Folding Stock - MBT
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    HK MP5K Folding Stock - MBT

    B&T Brugger & Thomet

    $589.95
    B&T HK MP5K - MBT Stock B&T MBT folding stock for HK MP5K. Polymer stock and adapter. 
    HKP-21421
    $589.95
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    $589.95
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  • On Sale
    New - Magpul HK SP5 Adapter Brace with Stock - HKP-21411-M HK SP5 Stock With Direct Fit Adapter
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    HK SP5 Stock With Direct Fit Adapter

    Magpul

    $142.46 - $189.95
    HK SP5 Stock With Direct Fit Adapter SP5 DT Magpul stock ready to drop in on any in-spec SP5 receiver or clone. We take our AR SP5 Adapter and attach it onto a mil-spec buffer tube. We then drop it...
    HKP-21411-M
    $142.46 - $189.95
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    $142.46 - $189.95
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  • On Sale
    New - TPM Sig P320C +3 Magazine Extension - HKP-21277 Sig P320C +3 Magazine Extension
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    Sig P320C +3 Magazine Extension

    Tactical Precision MFG

    Now: $17.21
    Was: $44.95
    TPM Sig P320C +3 Magazine Extension - Barrett Brown This extension is made from machined 6061 Aluminum. This magazine extension will increase capacity, increase reload speed and mag drops, and...
    HKP-21277
    Now: $17.21
    Was: $44.95
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    Now: $17.21
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