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You can find the Rosco Bloodline 16" 5.56 1:7 M4 Mid Gas System Barrel SBN here. Fast $9.95 shipping! Orders over $200 ship for free!
Rosco Manufacturing Bloodline 16" 5.56mm M4 profile barrel with a 1:7 twist rate and mid gas system. The outside of the barrel has a black salt bath nitride finish and the inside of the barrel also has a salt bath nitride finish.
| Caliber | 5.56 NATO |
| Barrel Length | 16" |
| Twist Rate | 1:7 |
| Gas System | Mid Length |
| Barrel Profile | M4 |
| Inside Finish | Black Salt Bath Nitride |
| Outside Finish | Black Salt Bath Nitride |
| Material | 4150 Steel |
| Barrel Weight | 28.97oz |
| Diameter At Gas Port | .750" |
| Muzzle Thread | 1/2x28 TPI (Threads Per Inch) |
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