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16" 5.56 Carbine Upper Receiver - Black | A2 | 15" M-LOK | Without BCG & CH

16" 5.56 Carbine Upper Receiver - Black | A2 | 15" M-LOK | Without BCG & CH

Rating: Total Reviews: (2 reviews) Write a Review
Product Code: RTBBU-16BLK
List Price: $401.95
MSRP: $401.95
Sale Price: Sale Price: $194.95
Savings: $207.00
$194.95
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Barreled 16" 5.56 Carbine Upper Receiver | A2 | 15" M-LOK

NO BCG OR CHARGING HANDLE INCLUDED

Click here for Charging Handles

Click here for Bolt Carrier Groups

This Barreled 16 inch M-LOK upper receiver comes with a 15 inch free-float handguard and is built with only the best Mil-Spec components. The heart of this upper is comprised of a 4150 M4 barrel.



Barrel
Specifications
Caliber 5.56
Length 16"
Material 4150 Chrome Moly Vanadium
Profile M4
Finish QPQ Corrosion Resistant
Gas System Length Carbine
Gas Block Journal .750"
Dimpled? No
Twist Rate 1:7
Muzzle Thread 1/2x28 TPI
Weight 27.2oz
Barrel Extension M4 Feed Ramps
Target Crown 11 Degree


Upper Receiver:

  • Machined from a Mil-Spec 7075 T6 Forging
  • Black Anodization
  • M4 Feed ramps


Handguard:

  • 15" Lightweight - Free Float M-LOK
  • Black Anodization
***Please allow an additional 2-3 business days of lead time as these uppers are made to order.***
SKU:
RTBBU-16BLK

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Rating:
2 Reviews

  • bob

    Sep 27th 2023
    5 Sep 27th 2023
    5.56 16" upper

    I had a spare lower and a CMMG 22 adapter for 5.56 ar sitting around unused. I found this upper w/o bcg at agreat price. Ihad in hand within days of ordering it and ran the CMMG in it flawlessly for mag after mag. Great groups and accuracy. Just got another bcg today and will test 5.56 next trip now that it is sighted in.

  • Daniel Tomlinson

    Jan 30th 2023
    5 Jan 30th 2023
    Pleased 2 times!

    There was a small description discrepancy with my order so I had the opportunity to experience the customer support. RTB was SUPER quick to address the issue and ensured that customer satisfaction was emphasized. That kind of service is hard to find and is appreciated more and more everyday. The upper is true quality with zero assembly tooling marks or scratches. The handguard is quality and hosts the barrel at a dead center position. I'm please with the product and please with the customer service... Pleased on 2 accounts! I'll recommend RTB to others anytime.