Utilizing a three-stage thermal treatment process, our new AZR alloy offers a more responsive microstructure for better feel, more forgiveness and more performance while maintaining the same strength as its predecessor Using a Longitudinal Groove System, LGS, across the thickest section of the barrel wall allows for excess weight reduction while also increasing flexibility for an increased performance zone Multi-variable wall design creates an expanded sweet spot and thinner barrel walls that are more forgiving after off-centered contact 2nd Generation AV2 Anti-Vibration knob features an upgraded, finely tuned harmonic dampening system for better feel and less negative vibrational feedback Ring-free barrel construction allows for more barrel flex and increases performance with no dead spots.