Rosco Manufacturing Bloodline Saucepack includes a 16" 5.56mm M4 profile barrel with a Bloodline Bolt Carrier Group, Gas block and gas tube. The parts are all designed to work perfectly when paired together and are designed to maximize the performance of each component, collectively!
| 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) |
