Bloodline 10.5" M4 5.56 NATO: This Rosco 10.5 M4 5.56 NATO Bloodline Barrel is designed to be the perfect addition to any SBR or Pistol build.
| Brand | Rosco Manufacturing |
| Category | Rifle Barrels |
| Model | Bloodline |
| Caliber | 5.56 NATO |
| Material | Chrome Moly Vanadium |
| Finish | Nitride |
| Twist | 1:7" |
| Length | 10.50" |
| Weight | 19.28 oz |
