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.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • New - HKP P2000 MOD 1 Threaded Barrel Compensator - HKP-21797 HK P2000 MOD 1 Threaded Barrel Compensator
    Add to Cart

    HK P2000 MOD 1 Threaded Barrel Compensator

    HKP HK Parts

    $179.95
    HK Parts MOD 1 Compensator for Threaded Barrel: P2000 The HK Parts MOD 1 compensator perfectly blends form and function, setting a new standard in muzzle control. Experience a significant reduction in muzzle flip and recoil, allowing you to get back on...
    HKP-21797
    $179.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $179.95
    Subtotal:
  • New - HKP HK UMP/USC 4 Piece M-LOK Set - Cerakote - HKP-21664-M HK UMP, USC 4 Piece M-LOK Set - Cerakote
    Choose Options

    HK UMP, USC 4 Piece M-LOK Set - Cerakote

    HKP HK Parts

    $139.95
    HKP HK UMP/USC 4 Piece M-LOK Set - Cerakote Upgrade your UMP/USC with the HK Parts 4-piece M-LOK set. This kit significantly expands the range of attachments you can add to your UMP/USC receiver, making it the ultimate choice for customization. Crafted...
    HKP-21664-M
    $139.95
    Choose Options
    Qty in Cart: 0
    Quantity:
    Price:
    $139.95
    Subtotal:
  • Out Of Stock
    New - B&T Recoil Buffer Pin - 3x12 - HKP-21762 B&T Recoil Buffer Pin - 3x12

    B&T Recoil Buffer Pin - 3x12

    B&T Brugger & Thomet

    $1.95
    B&T Recoil Buffer Pin - 3x12 B&T factory recoil buffer pin for folding and telescopic stocks.
    HKP-21762
    $1.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $1.95
    Subtotal:
  • On Sale
    New - B&T HK G3 Brass Catcher - HKP-21703 HK G3 Brass Catcher
    Add to Cart

    HK G3 Brass Catcher

    B&T Brugger & Thomet

    Now: $297.95
    Was: $385.00
    B&T HK G3 Brass Catcher THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE.  SALE IS FINAL.  Mounts to B&T tri-rail handguard (BT-21042) which is no longer available from B&T. The B&T HK G3 brass catcher is a...
    HKP-21703
    Now: $297.95
    Was: $385.00
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $297.95
    Was: $385.00
    Subtotal:
  • New - RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug - HKP-21585 HK MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug
    Add to Cart

    HK MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug

    RCM

    $279.95
    RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug This is the ultimate US-made barrel for any new or conversion build for the MP5K .40 cal. Crafted from top-grade CHF 41v40 material, it’s machined to impeccable standards. With the correct...
    HKP-21585
    $279.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $279.95
    Subtotal:
  • On Sale
    Used - H&K HK P7M10 .40 S&W Magazine Follower Insert - USED - BLEMISHED - HKP-01364-B
    Add to Cart

    HK P7M10 Magazine Follower Insert - .40 S&W - USED - BLEMISHED

    H&K Heckler & Koch

    Now: $19.95
    Was: $34.95
    H&K HK P7M10 .40 S&W Magazine Follower Insert - USED - BLEMISHED USED. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.
    HKP-01364-B
    Now: $19.95
    Was: $34.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $19.95
    Was: $34.95
    Subtotal:
  • On Sale
    New - HKP .40 S&W 4 Prong Flash Hider - 14.5x1 LH - HKP-21445 HK Pistol Flash Hider  - .40 S&W - 4 Prong - Threaded 14.5x1 LH
    Add to Cart

    HK Pistol Flash Hider - .40 S&W - 4 Prong - Threaded 14.5x1 LH

    USA

    Now: $43.95
    Was: $79.95
    HK .40 S&W 4 Prong Flash Hider - 14.5x1 LH THIS IS A CLOSEOUT PRODUCT DUE TO A HARMONIC (TUNING FORK EFFECT) PRESENT WHEN SHOOTING.  THE PART IS ENTIRELY FUNCTIONAL AND IS SOLD AS-IS, RETURNS WILL NOT BE ACCEPTED. For use on all HK German .40...
    HKP-21445
    Now: $43.95
    Was: $79.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $43.95
    Was: $79.95
    Subtotal:
  • New - B&T HK G36/MP7 Picatinny Side Rail - HKP-21419 HK MP7, G36 Picatinny Side Rail
    Add to Cart

    HK MP7, G36 Picatinny Side Rail

    B&T Brugger & Thomet

    $57.95
    B&T HK G36/MP7 Picatinny Side Rail Comes with all mounting hardware. Each rail is sold individually. Compatible With: HK G36 HK MP7 Specs: 127mm length
    HKP-21419
    $57.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $57.95
    Subtotal:
  • New - Strike Industries HK 416 - 9" Full Duty Handguard - HKP-21312 HK416 Handguard - 9" - Strike Industries GRIDLOK - Full Duty
    Add to Cart

    HK416 Handguard - 9" - Strike Industries GRIDLOK - Full Duty

    Strike Industries

    $318.95
    Strike Industries HK 416 - 9" Handguard - Gridlok Full Duty The Strike Industries GRIDLOK® Rail for 416 gives you a primary, a secondary or multiple setup options as a quick and direct handguard swap. The GRIDLOK® Rail for 416 has the SI patent...
    HKP-21312
    $318.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $318.95
    Subtotal:
  • Out Of Stock
    New - HKP HK MP5 Navy Binary Trigger Group - Engraved - RAL 8K - HKP-21290-M HKP HK MP5 Navy Binary Trigger Group - Engraved - RAL8000

    HKP HK MP5 Navy Binary Trigger Group - Engraved - RAL8000

    HKP HK Parts / FA Franklin Armory

    $1,499.95
    Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K Coming Soon! 3 Position Navy style Engraved Pictograph  – HK Binary Trigger Group Our latest and greatest Binary trigger group freshly delivered with a factory HK German housing that...
    HKP-21290-M
    $1,499.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $1,499.95
    Subtotal:
  • Out Of Stock
    New - Franklin Armory / HKP FA HK MP5 Trigger Group – 2 Round Engraved Binary Housing - RAL 8K - HKP-21160 HK MP5, SP5 Binary Trigger Group - SEF Navy - BFSIII

    HK MP5, SP5 Binary Trigger Group - SEF Navy - BFSIII

    HKP HK Parts / FA Franklin Armory

    $1,499.95
    COMING SOON! Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K 3 Position 2 round burst style Engraved Pictograph – HK Binary Trigger Group Our latest and greatest Binary trigger group freshly delivered with a factory HK German housing...
    HKP-21160
    $1,499.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $1,499.95
    Subtotal:
  • New - H&K HK MP5K 0,1,3 Burst Trigger Housing or Frame - HKP-01684 HK MP5K  0,1,3 Burst Trigger Housing or Frame
    Add to Cart

    HK MP5K 0,1,3 Burst Trigger Housing or Frame

    H&K Heckler & Koch

    $224.95
    MP5K & SP89 Ambidextrous Grip Frame, Trigger Housing marked with the safe, semi & 3rd burst options only (3 position burst only housing). A Genuine Heckler and Koch part. This housing is made for ambidextrous trigger configurations. Trigger Pack...
    HKP-01684
    $224.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $224.95
    Subtotal:
  • Total: items /

Adding your products to cart