Rosco Manufacturing Purebred 20" 6mm ARC SPR profile barrel with a 1:7.5 twist rate and rifle length gas system. The outside of the barrel has a 80 Grit Bead Blast finish.
| Caliber | 6mm ARC |
| Barrel Length | 20" |
| Twist Rate | 1:7.5 |
| Gas System | Rifle Length |
| Barrel Profile | SPR |
| Outside Finish | 80 Grit Bead Blast |
| Material | 416R Stainless Steel |
| Barrel Weight | 43oz |
| Diameter At Gas Port | .750" |
| Muzzle Thread | 5/8x24 TPI (Threads Per Inch) |
