HK Rifle / SMG Parts

HK Rifle / SMG Parts

Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!

Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • New - HKP HK UMP 5 Prong Ported Flash Hider - 5/8x24 - HKP-21569 HK UMP 5 Prong Ported Flash Hider - 5/8x24
    Add to Cart

    HK UMP 5 Prong Ported Flash Hider - 5/8x24

    HKP HK Parts

    $89.95
    HKP HK UMP 5 Prong Ported Flash Hider - 5/8x24 5-prong UMP ported flash hider designed for our new UMP 45 parts kit. Not only does it protect exposed threads, it also enhances the appearance of your firearm while delivering flash suppression. Compatible...
    HKP-21569
    $89.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $89.95
    Subtotal:
  • New - H&K MR556 Slimline Barrel, 16.5" - HKP-21322 HK MR556 Barrel 5.56 / .223 - 16.5" - Slimline
    Add to Cart

    HK MR556 Barrel 5.56 / .223 - 16.5" - Slimline

    H&K Heckler & Koch

    $489.95
    H&K MR556 Slimline Barrel, 16.5" Genuine HK MR556 Slimline 16.5" Barrel.  Non-chrome-lined for match accuracy. Compatible With: HK MR556
    HKP-21322
    $489.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $489.95
    Subtotal:
  • New - HKP - HK MP5 Folding Brace/Stock Adapter - HKP-21217 HK MP5 Stock or Brace Adapter - Folding
    Add to Cart

    HK MP5 Stock or Brace Adapter - Folding

    HKP HK Parts

    $149.95
    HKP - HK MP5 Folding Brace/Stock Adapter Our HK Parts brace adapter was made from a solid billet of CNC machined aircraft grade aluminum with QD sling attachment points. Properly buffered with factory correct “H” buffers to protect your...
    HKP-21217
    $149.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $149.95
    Subtotal:
  • New - HKP HK MP5 Single Stage Semi Auto Trigger Pack - SEF - HKP-21083 HK MP5 Trigger Pack - Single Stage Semi Auto - SEF
    Add to Cart

    HK MP5 Trigger Pack - Single Stage Semi Auto - SEF

    HKP HK Parts

    $449.95
    HKP/H&K MP5 9mm Semi-Auto SEF Single Stage Trigger Pack This trigger pack starts as a factory F/A trigger pack before being converted into a semi-auto trigger pack and receiving single-stage trigger work. This is the best option for users who...
    HKP-21083
    $449.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $449.95
    Subtotal:
  • On Sale
    New - HKP-20785 - HKP-20785 Bolt Action Drake Bolt Knob - Midnight Bronze - 5/16x24 RH
    Add to Cart

    Bolt Action Drake Bolt Knob - Midnight Bronze - 5/16x24 RH

    Tactical Precision MFG

    Now: $20.95
    Was: $39.99
    TPM - Drake Bolt Knob - Midnight Bronze These bolt knobs are made from aluminum and are finished in midnight bronze Cerakote and will fit any 5/16-24 threaded bolt handle. Features: Material: aluminum Color: midnight bronze Threading:...
    HKP-20785
    Now: $20.95
    Was: $39.99
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $20.95
    Was: $39.99
    Subtotal:
  • New - HK UMP .45 15 Round Magazine Spring - HKP-20679 HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US
    Add to Cart

    HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US

    HKP HK Parts

    $9.95
    HK UMP .45 15 Round Magazine Spring Perfect for spares and to have on hand as these are consumable item that needs to be replaced from time to time. A must have item if you own a USC/UMP conversion or UMP.
    HKP-20679
    $9.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • New - H&K HK UMP .45 Conversion Kit - HKP-20623 HK UMP .45 Conversion Kit
    Add to Cart

    HK UMP .45 Conversion Kit

    $1,099.95
    H&K HK UMP .45 Conversion Kit This kit optimizes the UMP platform by allowing the user swap between calibers in approximately 5 minutes. The Michael's machine semi-auto bolt pairs perfectly with the TPM and Gideon Shadow receivers as well as USC to...
    HKP-20623
    $1,099.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,099.95
    Subtotal:
  • Used - HK SL8 Magwell - Used - Gray - HKP-20056 HK SL8 Magwell - Used - Gray
    Add to Cart

    HK SL8 Magwell - Used - Gray

    USA

    $9.95
    HK SL8 Magwell - Used - Gray Used Magwell - Gray - SL8
    HKP-20056
    $9.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $9.95
    Subtotal:
  • On Sale
    New - HKP Extended Harris Bipod Adapter - Picatinny - HKP-15374 Picatinny Harris Bipod Adapter - Extended
    Add to Cart

    Picatinny Harris Bipod Adapter - Extended

    HKP HK Parts

    Now: $9.95
    Was: $19.95
    HKP Extended Harris Bipod Adapter   Universal Picatinny rail Harris bipod adapter
    HKP-15374
    Now: $9.95
    Was: $19.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $9.95
    Was: $19.95
    Subtotal:
  • New - HKP MP5 9mm Pistol Build Kit With Flat, Top Rail & Weldment Set - SEF Binary Trigger - HKP-20523
    Add to Cart

    HK MP5 Parts Kit - SEF Binary Trigger - Pistol Build - Receiver Flat and Weldment Set - 9mm

    $1,859.95
    MP5 9mm Pistol Build Kit Complete German & USA Made Parts- SEF Binary Trigger Group MP5 9mm parts kit complete with all the parts needed for an MP5 semi-auto pistol. Each kit comes with all 6 of the needed US made compliance parts to be legal as a...
    HKP-20523
    $1,859.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,859.95
    Subtotal:
  • On Sale
    New - Timney Triggers HK93 .223 2-Stage Trigger Complete - HKP-20512 HK33, HK53, HK93 2-Stage Trigger Group - .223 - Complete
    Add to Cart

    HK33, HK53, HK93 2-Stage Trigger Group - .223 - Complete

    Timney Triggers

    Now: $487.95
    Was: $548.95
    Timney Trigger Group for .223 - HK93 SEF Timney trigger group comes completely assembled and ready to drop in to your receiver. Set up with a German ejector lever, new SEF selector lever and a brand new factory German housing for the best trigger group...
    HKP-20512
    Now: $487.95
    Was: $548.95
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $487.95
    Was: $548.95
    Subtotal:
  • Out Of Stock
    New - H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned - HKP-20404 HK MP5, HK33, HK53, HK93, HK91, G3 Trigger Housing - 3 Position 0,1,3 Pictogram Burst - Clipped and Pinned - 9mm, 5.56 / .223, 7.62 / .308

    HK MP5, HK33, HK53, HK93, HK91, G3 Trigger Housing - 3 Position 0,1,3 Pictogram Burst - Clipped and Pinned - 9mm, 5.56 / .223, 7.62 / .308

    H&K Heckler & Koch

    $0.00
    H&K MP5, 93/53/33, G3/91 (9mm, 5.56/.223, 7.62/.308) 3 Position (0,1,3 Pictogram) Universal Burst Trigger Housing - Clipped & Pinned Introducing the new Factory German trigger housing, designed for use in safe, semi, and burst configurations...
    HKP-20404
    $0.00
    Out Of Stock
    Qty in Cart: 0
    Quantity:
    Price:
    $0.00
    Subtotal:
  • Total: items /

Adding your products to cart