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).
- Barrel Length: 11.5″
- Barrel Weight: 20.82 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: Carbine
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride
