Sale

AR-15 5.56 Nato 16" Rifle Upper Complete Build Kits (Unassembled Black Barrel Upper) -BLK

Shooters Gate
SKU:
AR-BDKT-U556-167HC-M15-BLK-1
$479.99 $259.19
(11 reviews)
Weight:
7.00 LBS
Current Stock:
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AR-BDKT-U556-167HC-M15-BLK-1

Only a Few Left — Act Now!

 

Omnisend Form ID:69202add0e3326f898b1900e

Key Features

Forged 7075-T6 Upper Mil-Spec stripped upper receiver (black)
16" 5.56 NATO Barrel 1:8 twist, mid-length gas (optimized for 55–77 gr)
15" Free-float Handguard M-LOK compatible for accessories and rails
USA-Made BCG Bolt carrier group manufactured in the USA
Complete Lower Parts Kit Trigger, pins, springs, hammer — ready to install
Mil-Spec Buffer Tube & Spring Carbine buffer and spring included
Bonus Gear Included Armorer’s wrench, gun mat, one-point sling (all free)

What You Still Need to Complete the Build

Stripped Lower Receiver An AR-15 Stripped Lower Receiver (transfer requires FFL & background check as governed by local law)
Magazine A magazine appropriate for your selected caliber

Package Contents

Upper Receiver (forged 7075-T6, black, Mil-Spec, stripped) × 1
Barrel — 16" 5.56 NATO × 1
Dust Cover (black) × 1
Forward Assist (black) × 1
Gas Block — .750" × 1
Gas Tube — mid-length × 1
Muzzle Device — A2 birdcage flash hider with crush washer × 1
Handguard — 15" black M-LOK free-float × 1
Bolt Carrier Group (Made in USA) × 1
Charging Handle (black standard) × 1
Lower Parts Kit (trigger, pins, springs, hammer, etc.) × 1
Buffer Tube — black Mil-Spec (commercial set available on request) × 1
Castle Nut (black) × 1
End Plate — black Mil-Spec × 1
Stock — black Mil-Spec with built-in sling adapter (commercial set available on request) × 1
Buffer Spring (standard carbine) × 1
Buffer — carbine buffer × 1
Extra Ambi End Plate (left/right sling options) × 1
Armorers Wrench × 1
Gun Mat (protective assembly/cleaning mat) × 1
One-Point Sling (adjustable) × 1

Model: AR-15 Unassembled Rifle Build Kit

Shooters Gate proudly offers this AR-15 Unassembled Rifle Build Kit — it contains nearly all components required to assemble a functioning AR-15 upper and the common lower parts needed for installation.

Complete upper assembly components
USA-made bolt carrier group
5.56 NATO — 1:8 twist (mid-length gas)

Note: Firearm laws and transfer requirements vary by state and locality. It is the buyer's responsibility to ensure compliance with all federal, state and local laws when purchasing and assembling firearm components.

SKU: AR-UBK-16-556
Availability: In stock

Reviews

  • 5
    Great buy!

    Posted by Dennis on Dec 4th 2025

    Great kit! Super glad I went with this build kit and added my own lower. Definitely a great buy if you’re on a budget!

  • 5
    I loved the the upper

    Posted by Syed on Dec 4th 2025

    Very nice Kit, ran flawlessly

  • 5
    Good

    Posted by Phil on Dec 3rd 2025

    Great kit, all parts fit in flawlessly. Was not disappointed with the parts they sent. Great price.

  • 5
    Perfect

    Posted by Carmine on Dec 3rd 2025

    Excellent kit grate price

  • 5
    Great

    Posted by John on Dec 2nd 2025

    Super fast shipping.

  • 5
    Great kit

    Posted by DAVID on Dec 2nd 2025

    I have put several of these kits together. They seem like really good kits for the lowest prices anywhere. If you have any problems, customer service is second to none.

  • 5
    love it

    Posted by Homan on Dec 1st 2025

    I bought this kit about one years ago and love the rifle, I have built 5 more rifles in different kits and have had no issues out of any of them. The quality of the parts are great and cant beat the price.

  • 5
    Good

    Posted by Jonathan on Dec 1st 2025

    Fair price, lower quality, misleading advertisement, I would buy agian.

  • 5
    Perfect

    Posted by Kim Sackmann on Nov 26th 2025

    Parts as advertised. Excellent shipping & handling, arrived ahead of schedule. Customer Service was fast and professional.