Spiral Vent Barrel

What does venting do?
The gas travels faster than the ball, thus knocking it off course when the ball exits the tip. Venting dissipates that blast behind the ball creating a less turbulent cylinder of gas. This helps keep the ball on course and reduces the report. Dual venting is a little quieter but is a less efficient than the single.

Standard venting service is 2 spirals 3 inches long.    This is a service to port your existing barrel.