I have just ordered an Air Venturi Avenger in .22 Caliber. Up here in the great white north we get the "Canadian Version" which has no moderator built into the shroud. This was achieved by the factory building the Canadian version with an extended barrel that comes out to the removable shroud cap. It will be interesting to see how that affects the gun. It will for sure be louder, may produce better Muzzle velocity at a given air reg setting/hammer spring setting and I will be curious to see what if any affect it has on Accuracy.