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AR-15 Unassembled Upper Assembly – 16″ / .223 | 5.56 / 1:8 / 13″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

Icon - 5.56 NATO AR CaliberIcon - 1:8 Twist RateIcon - 16 AR Barrel
Rated 5.00 out of 5 based on 2 customer ratings
(2 customer reviews)

Features: 7075-T6 Aluminum Mil-Spec Anodized Receiver Carbine Length Gas Tube Assembly 16" .223 | 5.56 Barrel 4150 Chrome Moly Steel Nitride Coated Barrel Standard Flash Hider Twist Rate: 1:8 13" CBC Arms Gen 2 Handguard/Rail *Does Not Include Bolt Carrier Group & Charging Handle*   - [READ MORE BELOW]

$279.99 $199.00

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Description

Features:

7075-T6 Aluminum
Mil-Spec Anodized Receiver
Carbine Length Gas Tube Assembly
16″ .223 | 5.56 Barrel
4150 Chrome Moly Steel Nitride Coated Barrel
Standard Flash Hider
Twist Rate: 1:8
13″ CBC Arms Gen 2 Handguard/Rail

*Does Not Include Bolt Carrier Group & Charging Handle*

 

Product Details: AR-15 Unassembled Upper Assembly – 16″ / .223 | 5.56 / 1:8 / 13″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

➲ Upper Receiver

The foundation of all good AR\'s is built upon a dependable upper receiver. CBC upper receivers offer best-in-class quality while providing you years of dependable service. Boasting a MIL-SPEC type III hard coat anodized finish and machined from 7075-T6 forged aluminum, this M4 flat-top receiver delivers a lifetime of superior function. You want your AR built upon a solid platform - this receiver gives you the confidence that your AR-15 will function when it counts most.

➲ Carbine Gas Tube

The carbine gas tube is machined from stainless steel and measures roughly 7" from the barrel's gas port to the front face of the receiver

➲ .750 Low Profile Gas Block

Constructed from 4150 hardened steel and features a secure dual-set screw mounting design

➲ Colt Competition Style Barrel

The barrel is machined from 4150 chrome moly vanadium steel with a nitride finish.

➲ A2 Flash Hider

Is machined from quality steel and finished with a corrosion resistant nitride finish.

CBC provides a wide selections of AR-15 upper assemblies in a variety of styles and lengths - all partial AR-15 uppers are assembled with everything less the charging handle and bolt carrier group. Our partial upper assemblies offer quality and performance that will satisfy the most demanding shooter. Better yet, all CBC AR-15 uppers are custom built-to-order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 uppers are backed by our Lifetime Warranty - if any CBC upper assembly becomes defective, we will repair or replace it at no charge. Get your AR-15 upper assembly at CBC today and save with free shipping!

Additional information

Weight 4.5 lbs
Dimensions 24 x 4 x 4 in
Platform

Caliber

Barrel Length

Rail/Handguard

Twist Rate

2 reviews for AR-15 Unassembled Upper Assembly – 16″ / .223 | 5.56 / 1:8 / 13″ CBC Arms Gen 2 Keymod AR-15 Handguard / Rail

  1. Rated 5 out of 5

    Jason

    I’ve never assembled any gun parts before, but I’m pretty handy working on bicycles, and carpentry. I didn’t have any problem with this. You’ll need a torque wrench, vice block to hold the lower steady, and I used a Snap-On adjustable crow foot 3/8″ wrench for torqueing the barrel to the receiver.

    I wasn’t able to find assembly instructions on this site, but these 2 YouTube videos really helped:
    https://www.youtube.com/watch?v=MngN1Gfof5U&list=FLO2FKqjANhdVyBzpIcSA3Ug&index=1 -This guys barrel nut was 1-3/16″ not 1-1/8″
    https://www.youtube.com/watch?v=BnjW87J5MTU&index=2&list=FLO2FKqjANhdVyBzpIcSA3Ug

    I put it on a Palmetto Arms lower, and it fit perfectly, the black anodizing was a flawless match.

    other comments:
    I believe the barrel nut to be 1-1/8″ but the machining only allows for a narrow wrench. Most inexpensive crows foot or adjustable wrenches won’t fit the width. 1-1/8″ size will mar the anodizing a little, since the fit is so exact, you have to work the wrench into place. I found the adjustable crows foot wrench by Snap-On to be an easier choice, and a little more forgiving. (although expensive, the Snap-On brand has a narrow footprint)
    https://store.snapon.com/Adjustable-inches-mm-Wrench-Crowfoot-Adjustable-3-8-drive-P644784.aspx

  2. Rated 5 out of 5

    Larry Franklin

    Easy to take an inexpensive wrench, such as open ended or a combo type and using a surface grinder, narrow the width to fit. Shadetree mechanic milling machine!
    Lawrence -Retired Equipment Shop Foreman
    ASE Master Tech (for 1 more year)
    E1-3, A1-A9, T1-T8, H2,T2- T7.

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