Based on the combat-proven Vortex 5.56mm G6A1 system, the definitive development of the patented Vortex design now features a 40% increase in structural rigidity. The new G6A2 model features our patented 15-degree helix, guaranteeing a complete propellant burn and negligible flash, unlike the standard issue closed-end bird cage unit or competing straight-flute designs. Right hand helical flutes will not loosen under sustained fire. The flute configuration is 40% stronger due to greater mass. Accuracy remains the same or improves. No washers or locking washers needed.