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 - H&K 91/G3 (7.62x51/.308) Locking Piece - 45 Degree - HKP-00499 HK91, G3 Locking Piece - 45 Degree
    Add to Cart

    HK91, G3 Locking Piece - 45 Degree

    H&K Heckler & Koch

    $29.95
    Heckler and Koch New Old Stock German HK Locking Piece for G3, 91, and PTR This is the factory-correct 45-degree locking piece for HK 91/G3 and PTR .308 full-length firearms. All steel construction is new in sealed wrapping.
    HKP-00499
    $29.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $29.95
    Subtotal:
  • Out Of Stock
    New - H&K 93/53/33 (5.56/.223) Factory Correct Ejector Lever - HKP-00191 HK33, HK53, HK93 Ejector Lever - Factory Correct

    HK33, HK53, HK93 Ejector Lever - Factory Correct

    H&K Heckler & Koch

    $69.95
    HK German Factory 93, 33, 33K, 53 & 300 Blackout Ejector Lever New 2nd generation latest design upgraded German factory correct ejector lever. This is the latest design with all the improvements for use in all the various models and styles of 556/223...
    HKP-00191
    $69.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • Out Of Stock
    New - H&K MP5K/SP89/SP5K 9mm Shoulder Harness - Right Handed - HKP-01295 HK MP5K, SP89, SP5K 9mm Shoulder Harness - Right Handed

    HK MP5K, SP89, SP5K 9mm Shoulder Harness - Right Handed

    H&K Heckler & Koch

    $299.95
    HK MP5K, SP89 & SP5K Shoulder Rig - Right Hand HK MP5K, SP5K shoulder harness with 2X spare magazine pouch. This is the finest shoulder harness available and is the one used by the Secret Service and other operators when discretely carrying the HK...
    HKP-01295
    $299.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $299.95
    Subtotal:
  • New - H&K Selector Catch Lever Spring For Ambidextrous Trigger Packs - HKP-17328
    Add to Cart

    HK Selector Catch Lever Spring - Ambi Trigger Packs

    H&K Heckler & Koch

    $12.95
    HK German Ambidextrous Trigger Pack Axle Spring For Catch Lever This is the spring that powers the ambi lever that allows you to take apart any of the ambidextrous trigger packs. This lever spring takes the spring tension off of the left and right side...
    HKP-17328
    $12.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $12.95
    Subtotal:
  • HK MP5, MP5K Cocking Handle - Enhanced HK MP5, MP5K Cocking Handle - Enhanced
    Add to Cart

    HK MP5, MP5K Cocking Handle - Enhanced

    HKP HK Parts

    $39.95
    HKP HK MP5, MP5K Cocking Handle - Enhanced The HKP enhanced cocking handle is just like our MP5 extended cocking handle but was designed to also function with UTG monolithic M-LOK handguards. Available exclusively at HK Parts. Specifications: Made in...
    HKP-22382
    $39.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • New - H&K HK Mark 23 Firing Pin Retaining Pin - HKP-01601
    Add to Cart

    HK Mark 23 Firing Pin Retaining Pin

    H&K Heckler & Koch

    $8.95
    HK Mark 23 Firing Pin Retaining Pin Replacement pin for the Mark 23 firing pin block. A must have part to have on hand. 
    HKP-01601
    $8.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $8.95
    Subtotal:
  • Used - H&K 91/G3 (7.62x51/.308) Rear Sight Assembly - Used-Excellent - HKP-02229 HK91, G3 Rear Sight Assembly - Used-Excellent
    Add to Cart

    HK91, G3 Rear Sight Assembly - Used-Excellent

    H&K Heckler & Koch

    $18.95
    HK German G3, 91, PTR Rear Sight Assembly - Used Excellent Condition HK German factory sight with rear sigh detent and detent spring installed. These sights are the finest hand-picked, sorted sights available at a fraction of the cost of a new $85 set...
    HKP-02229
    $18.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $18.95
    Subtotal:
  • New - HKP Shield Sight Optics Mount – HK VP9 - HKP-20796 HK VP9 Optic Plate - Shield Sights - Red Dot Pistol Mount
    Add to Cart

    HK VP9 Optic Plate - Shield Sights - Red Dot Pistol Mount

    HKP HK Parts

    $49.99
    HK VP9 Optics Mount -Shield Sight Each plate is CNC machined from the best quality billet steel, deburred, tumbled and Cerakoted for the ultimate in durability and appearance. Each unit comes with 2 X T20 steel Torx Plus screws for mounting the optic...
    HKP-20796
    $49.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $49.99
    Subtotal:
  • New - H&K HK416 A5 Factory German Extended Castle Nut - HKP-19164
    Add to Cart

    HK416A5 Castle Nut - Extended

    H&K Heckler & Koch

    $75.95
    H&K HK416 A5 Factory German Extended Castle Nut Original HK Factory German steel 416 A5 Extended Castle Nut. Perfect for MR556, HK 416 A5 builds, or upgrades. 
    HKP-19164
    $75.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $75.95
    Subtotal:
  • New - H&K/HKP 22 Round HK VP40/VP40 Tactical, P30/P30L/P30S .40 Cal Magazine - Black - HKP-19547 HK/HKP 22 Round HK VP40/VP40 Tactical, P30/P30L/P30S .40 Cal Magazine
    Add to Cart

    HK/HKP 22 Round HK VP40/VP40 Tactical, P30/P30L/P30S .40 Cal Magazine

    HKP HK Parts / Heckler & Koch

    $99.95
    H&K/HKP 22 Round HK VP40/VP40 Tactical, P30/P30L/P30S .40 Cal Magazine HK Parts take an existing 13 round mag the +10 mag extension and assembles them into a working 22 round mag. Each unit comes as a completely assembled VP40/P30 .40 cal 22 round...
    HKP-19547
    $99.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $99.95
    Subtotal:
  • New - HKP HK UMP (.40 S&W) 30 Round Magazine - HKP-17583 HK UMP Magazine - .40 S&W - 30 Round
    Add to Cart

    HK UMP Magazine - .40 S&W - 30 Round

    HKP HK Parts

    $49.95
    UMP, SMG .40 Cal - 30 Round Magazine Each 30 round magazine will fit all HK UMP .40 caliber carbines, SMG's as well as the USC-UMP .40 caliber conversions. Each magazine features, steel feed lips, enhanced polymer construction and all correct updated...
    HKP-17583
    $49.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $49.95
    Subtotal:
  • Out Of Stock
    New - Barrel Nut - HK 416, MR556 - Stainless Steel - HKP-17334 HK416, MR556 Barrel Nut - Stainless Steel

    HK416, MR556 Barrel Nut - Stainless Steel

    HKP HK Parts

    $39.95
    HK MR556, HK 416 Barrel Nut or Socket For Barrel - Stainless Steel A must have repair and replacement part for removal or when you have any work done to your barrel as the barrel nut may become damaged in the removal and installation processes. Made in...
    HKP-17334
    $39.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $39.95
    Subtotal:
  • Total: items /

Adding your products to cart