The SCAR barrel attaches to the end of your 16mm diameter barrel and puts spin on the dart, improving accuracy. You can also fire a Mega XL dart from the front.
We print this product at a finer layer height to reduce friction on the darts and help reduce the FPS drop. It comes in 3 line and 6 line variations. The more lines means it imparts spin more aggressively at the cost of FPS.