This Bloodline Barrel (Mid-Length): 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
| Brand | Rosco Manufacturing |
| Category | Rifle Barrels |
| Model | Bloodline |
| Caliber | 5.56 NATO |
| Material | Chrome Moly Vanadium |
| Finish | Nitride |
| Barrel Type | Mid-Length |
| Twist | 1:7" |
| Length | 14.50" |
| Thread Pattern | 1 / 2"x28 |
| Weight | 26.34 oz |
