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
  • On Sale
    New - HKP MP5, HK94 & SP5K Rear Sight Drum & Base - HKP-17512 HK MP5, HK94, SP5K Rear Sight Drum and Base - US
    Add to Cart

    HK MP5, HK94, SP5K Rear Sight Drum and Base - US

    HKP HK Parts

    Now: $41.95
    Was: $53.47
    HKP HK Parts Rear Sight Drum and Base for HK MP5, HK94, and HK SP5K Finally, an affordable factory correct rear sight that does not break the bank or lead to settling for inferior 3rd world produced pot metal cast MP5 rear sights. We offer the only set...
    HKP-17512
    Now: $41.95
    Was: $53.47
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $41.95
    Was: $53.47
    Subtotal:
  • Out Of Stock
    New - RCM MP5SD 9mm Locking Piece - 120 Degree - HKP-16715 HK MP5SD Locking Piece #5 - 120 Degree - 9mm

    HK MP5SD Locking Piece #5 - 120 Degree - 9mm

    RCM

    $34.95
    MP5SD 120 Degree Locking Piece - US This locking piece is a US made version of the factory German MP5SD 120 degree locking piece. This was the German locking piece that was marked #5 when HK Germany used to make them. Each locking piece is made here in...
    HKP-16715
    $34.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $34.95
    Subtotal:
  • New - H&K HK MR556/416 Tungsten Recoil Buffer - HKP-00041 HK416, MR556 Recoil Buffer - Tungsten
    Add to Cart

    HK416, MR556 Recoil Buffer - Tungsten

    H&K Heckler & Koch

    $97.95
    Heckler and Koch Tungsten Recoil Buffer for HK MR556 and HK416 The proprietary tungsten HK-manufactured buffer is one of the reasons why the HK 416 and MR556 are as reliable as they are. This is the perfect addition to all AR/M16 uppers...
    HKP-00041
    $97.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $97.95
    Subtotal:
  • New - H&K P30L 9mm Tactical Barrel - Threaded 13.5x1 LH - HKP-16746 HK P30L Tactical Barrel - 9mm - 5.06" - Threaded 13.5x1 LH - German
    Add to Cart

    HK P30L Tactical Barrel - 9mm - 5.06" - Threaded 13.5x1 LH - German

    H&K Heckler & Koch

    $343.95
    H&K P30L 9mm Tactical Barrel - Threaded 13.5x1 LH Made in Germany at the HK factory from HK German Cold Hammer Forged barrel blanks, heat treated and finished to HK specs. This is the only HK factory manufactured P30L threaded barrel. The finest...
    HKP-16746
    $343.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $343.95
    Subtotal:
  • On Sale
    New - HKP MP5 A3 Retractable Stock Buffer - HKP-18160
    Add to Cart

    HK MP5 A3 Retractable Stock Buffer

    HKP HK Parts

    Now: $4.95
    Was: $6.74
    MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high wear and common replacement items that does need to be replaced when they become torn, cracked, brittle, discolored & worn. These units are made from...
    HKP-18160
    Now: $4.95
    Was: $6.74
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $4.95
    Was: $6.74
    Subtotal:
  • Out Of Stock
    New - B&T HK MP5/MP5K 9mm Flash Hider - 3-Lug - Quick Detach - HKP-16902 HK MP5, MP5K, APC Flash Hider - 3 Lug - Quick Detach - 9mm

    HK MP5, MP5K, APC Flash Hider - 3 Lug - Quick Detach - 9mm

    B&T Brugger & Thomet

    $135.00
    B&T HK MP5/MP5K 9mm Flash Hider - 3-Lug - Quick Detach This flash hider slips over the end of the 3-lug barrel and with a light push and a 1/4 turn the flash hider attaches to the end of the tri-lug. Easy off and on installation and removal with a...
    HKP-16902
    $135.00
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $135.00
    Subtotal:
  • New - H&K MP5/MP5K/SP5K 10 Round Magazine - HKP-17872 H&K MP5/MP5K/SP5K 10 Round Magazine H&K Heckler & Koch HKP-17872
    Add to Cart

    HK MP5, HK94, SP89, SP5K Magazine - 9mm - 10 Round

    H&K Heckler & Koch

    $89.95
    H&K MP5/MP5K/SP5K 10 Round Magazine: Heckler & Koch factory fresh magazine from this current year's production. Mags hold 10 rounds only so this is ideal for restricted states or for those that want the mag to have a low profile. Compatible With:...
    HKP-17872
    $89.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $89.95
    Subtotal:
  • Out Of Stock
    New - HKP HK SL8 & HK G36 Top Rail Screw - HKP-20330 HK SL8, G36 Top Rail Screw

    HK SL8, G36 Top Rail Screw

    HKP HK Parts

    $5.95
    HK SL8 & G36 Top Rail Screw  This rail screw is the standard length rail screw used for all SL8 and G36 top rails. With the exception of the dual and single option models. A must have part and an easy part to loose or strip. Grab yours to have...
    HKP-20330
    $5.95
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $5.95
    Subtotal:
  • HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm
    Choose Options

    HK416 A5, MR556 A4 Gas Vent Screws - 1.0-2.5mm

    H&K Heckler & Koch

    $31.99
    H&K MR556 A4 and HK416 A5 Gas Vent Screws German gas vent screw for MR556 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm...
    HKP-22470-M
    $31.99
    Choose Options
    Qty in Cart: 0
    Quantity:
    Price:
    $31.99
    Subtotal:
  • On Sale
    HK G3 Parts Kit - Matching Numbers HK G3 Parts Kit - Matching Numbers
    Add to Cart

    HK G3 Parts Kit - Matching Numbers

    FMP HK CONTRACT

    Now: $189.95
    Was: $229.95
    FMP - G3 Matching Numbers Parts Kit - With One Mag The G3 has been an iconic battle rifle utilized all over the world and revered as one of the best that H&K has offered. You now have the opportunity to build one of these iconic battle rifles...
    HKP-20865
    Now: $189.95
    Was: $229.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $189.95
    Was: $229.95
    Subtotal:
  • On Sale
    New - Magpul HK MP5 .22LR SL Hand Guard - Black - HKP-20480 HK MP5 Handguard - SL - .22LR
    Add to Cart

    HK MP5 Handguard - SL - .22LR

    Magpul

    Now: $79.95
    Was: $99.95
    Magpul HK MP5 .22LR SL Handguard This forearm has been CNC machined to fit the HK MP5 .22 model specifically. The factory unit will not fit. HK parts took the time and made the modification possible using a CNC machine that was dedicated to removing...
    HKP-20480
    Now: $79.95
    Was: $99.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $79.95
    Was: $99.95
    Subtotal:
  • Total: items /

Adding your products to cart