Cobalt Kinetics

Rosco Bloodline 12.5” 5.56 NATO

$126.00

This 12.5” Rosco barrel is designed to bridge the gap between SBR-Pistol and/ or RECCE platforms and delivers amazing precision performance for its compact size. It is the perfect addition for the person attempting to create the ultimate intermediate patrol platform.

Product Description

Rosco Bloodline 12.5” 5.56 NATO Details

This 12.5” Rosco barrel is designed to bridge the gap between SBR-Pistol and/ or RECCE platforms and delivers amazing precision performance for its compact size. It is the perfect addition for the person attempting to create the ultimate intermediate patrol platform.

Our Rosco 5.56 (NATO) barrels are designed to meet the modern day carbine shooters requirements. We are a long way from our daddy’s “Sporter” AR, and those specs just won’t cut it anymore. From properly managed dwell times for SBR’s, to running Suppressed, or setting up a balanced patrol carbine we have incorporated your needs into our engineering. We have successfully accomplished this by picking the right twist rates, gas port diameters, and barrel materials according to the barrel we are making (not a lazy blanket method). We have also balanced input from our consumers and military end users in order to bring you the product you need, not just the one we want to sell you.

  • Barrel Length: 12.5″
  • Barrel Weight: 21.79oz
  • Barrel Material: 4150 CMV
  • Barrel Caliber: 5.56
  • Barrel Profile: Government
  • Twist: 1/7
  • Barrel Thread: 1/2 x 28
  • Gas Block Size: .750
  • Gas System Length: Carbine Length
  • Barrel Crown: 11 Degree
  • Barrel Finish: Nitride
  • Barrel Extension Finish: Nitride

Join and Discover

The Cobalt Difference

Cutting Edge

Innovation

Cobalt will never be satisfied with the status quo. We are always asking – Why? With our imagination, incredible engineers, and a desire to improve; we are constantly innovating an already amazing platform. We continue to explore how our innovative improvements can make you a faster and more accurate shooter. Innovation is at the core of who we are.

Military Grade

Durability

We torture test our rifles and pistols in the most extreme conditions, from the snow to the desert heat, they will function in any environment. The tight tolerances of the firearms protect the internal components from external elements. We Cerakote all our firearms to add to the durability. Multiple sources have reported that they have run our firearms in excess of the 50,000 rounds mark.

Match Grade

Precision

Our components are precisely engineered to the tightest tolerances. Our standards far exceed that of other manufacturers. We included match grade barrels and premium triggers in every firearm to enhance accuracy. Our Pro Buffer comes standard to reduce recoil allowing faster follow up shots. From the aggressive look and design to the quality of the components within, we are committed to assembling the finest firearms in the industry.

Uncompromising

Functionality

Every angle we cut, and every component we use, serves a function in our overall design that must be shot to be fully appreciated. At Cobalt Kinetics we source premium parts to compliment our high tolerances and precision engineering. Each component undergoes a strict quality control check before being installed into our firearms.

From the Experienced

The Cobalt Truth

I handled one of these at Firearms Unlimited in Exeter, RI. I have handled and fired a lot of AR’s in my lifetime but the fit and finish on this one is I have to say is the absolute best. I dare you guys or anyone to make a better one.

Thomas Neves
Picked up my first cobalt AR this week. As far as an AR rifle, this I will say is the best elaborate weapons system I have run across as of today…the machine work and design with dual operation components are outstanding. The only thing that would make my rifle any better would be if it was in Tennessee orange and white lol.

Danny Hall
No other AR comes this close to perfection on the market today. Fit, finish, function far surpass anything else, and dual drop means always having the drop in any tactical situation.

Brok Lee