Tel: 703-924-8888 / 703-924-8889
Shooters Gate

AR-15 5.56 Nato 20″ Rifle Upper 17″ Rail Complete Build Kits (Assembled Black Heavy Barrel Upper)


In stock

SKU: AR-BDKT-A556-20HP9F-M17-BLK Category: Tags: , , Brand:

Model: AR15 Assembled Rifle Build Kit


Shooters Gate is now proud to offer the AR15 Assembled Rifle Build Kit. With this build kit, you will be able to have almost all of the necessary components to build your very own AR-15 Rifle!

AR15 Assembled Rifle Upper Receiver Components:


A fully assembled Upper with the following components:

    • Black Forged 7075-T6 Mil-Spec Stripped upper receiver
    • 20'' 5.56 Nato Heavy Profile barrel
    • Black dust cover
    • Black forward assist
    • Gas Block (diameter varies depending on barrel)
    • Gas Tube (length varies depending on the barrel)
    • A2 Bird Cage Flash Hider with crush washer (Our Round Muzzle Brake will be attached to uppers going to California to comply with local laws).
      • Muzzle device will be parkerized or stainless steel (it will match the barrel material).
    • 17’’ Black M-LOK Free Float Handguard
  • Full-auto bolt carrier group, made in the USA
  • Black standard charging handle


Twist Ratios:

  • 5.56 Nato 20" Heavy Profile Barrels are 1:9 Twist


AR15 Lower Receiver Components:


  • Black lower parts kit including trigger and hammer with black pistol grip.
  • Black Mil-Spec Buffer Tube (Commercial set available on request, but only offered in black)
  • Black castle nut
  • Black end plate
  • Black Mil-spec Stock with built in sling adapter (Commercial set available on request, but only offered in black)
  • Buffer Spring
  • Buffer

What will you need to finish your AR15 Assembled Rifle Build kit ?


  • You are almost finished! There are still two things that you will need to complete this AR-15
    • You will still need an AR-15 Stripped Lower Receiver (FFL & Background Check required)
    • You will also need a magazine that is suitable for your desired caliber.


WARNING: This product can expose you to chemicals such as lead and other petroleum products which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.

For more information go to

Additional information

Weight 7.0 lbs
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