Rosco Bloodline 16″ M4 5.56 NATO 1:7 Twist AR15 Barrel

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  • ROSCO Rosco Bloodline 16″ M4 5.56 NATO 17 Twist AR15 Barrel
  • ROSCO Rosco Bloodline 16″ M4 5.56 NATO 17 Twist AR15 Barrel
  • ROSCO Rosco Bloodline 16″ M4 5.56 NATO 17 Twist AR15 Barrel
MSRP: $150.00
— You save $5.05
Frequently bought together:


Rosco Bloodline 10.5″ M4 5.56 NATO 1:7 Twist AR15 Barrel

This 16″ M4 5.56 NATO Mid-Length barrel was designed around the USASOC specs for an Improved Upper Receiver Group with a little bit of the Rosco touch as well. The longer gas system allows for a smoother gas curve which leads to managed dwell times. This combo creates a great balance of speed and performance. This Rosco Manufacturing barrel has been painstakingly engineered and designed with the actual user in mind. Rosco considers balanced input from both consumers and military end users to determine the right twist rate, gas port diameter, and barrel material to deliver the highest quality product so you can count on your weapon every time. Before you even open the box, you can see and feel the deliberateness of the entire Rosco Team to deliver high quality and maintain a reputation of excellence. When you open the box, you will feel an undeniable yet invisible pressure to handle the product with a sense of reverence.


  • Barrel Length     16″
  • Barrel Weight    28.97 Oz
  • Barrel Material  4150 CMV
  • Barrel Caliber    5.56
  • Barrel Profile     M4
  • Twist     1/7
  • Barrel Thread     1/2 x 28
  • Gas Block Size   .750
  • Gas System Length     Mid-Length
  • Barrel Crown     11 Degree
  • Barrel Finish      Nitride
  • Barrel Extension Finish   Nitride

Dedicated to Quality Manufacturing

Rosco Manufacturing remains as one of the foremost American manufacturers of hard-use precision (AR Platform) rifle barrels. Their production facility located in Central Falls, RI has over 50,000 square feet of production space. They also set aside plenty of room for high volume capacity. The team at Rosco continuously supplies many major gun manufacturers located all over the world with some of the highest quality products. Through superior workmanship and unprecedented engineering, their product line continues to exceed expectations of dealers, buyers, and especially the users. Rosco is proudly a complete solution for the OEM.

Accuracy is What Drives Rosco

Starting with simply wanting to produce one of the world’s most accurate rifle barrels, Rosco Manufacturing accomplished that and has now evolved into a complete solution for the firearm industry. They maintain a clear focus on accuracy in all aspects of their brand. Accurate production, accurate billing, accurate shipping, and last but not least, accurate customer support. Accuracy drives everything that they do at Rosco Manufacturing and it shows, buy Rosco Manufacturing products with confidence from Black Rifle Depot.

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