Internal "studs" grab base of the wad
Ideal for long shells
Produces the tightest patterns
Interchangable with similar models
The Patternmaster extended choke is designed to be used with 3-1/2" shells for maximum pattern and density. The revolutionary "studs" inside the choke grabs the base of the wad as it passes through while the front of the wad is flush with the front of the tube. Interchanges with Browning Invector Plus, Winchester Super X2, and Winchester Super X3, and similar models.