This Rosco 14.5” 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. ALL NFA RULES APPLY!
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).
Product Specs:
- Barrel Length: 14.5"
- Barrel Weight: 26.34oz
- Barrel Material: 4150 CMV
- Caliber: 5.56 NATO
- Profile: Government
- 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
- Caliber:
- 5.56 NATO