Iver Johnson Choke Tube 12ga. - X-full Mobil Choke Extended

The Iver Johnson Choke Tube 12ga. - X-full Mobil Choke Extended is a precision interchangeable choke designed for shotgun shooters demanding maximum pellet density and range capability. Built for law enforcement, competitive shooters, and hunters pursuing waterfowl or upland game at extended distances, this extended choke tube represents a critical accessory for any 12-gauge platform. The X-full constriction pattern delivers the tightest shot grouping available, concentrating pellets in a dense pattern that extends effective range and increases hit probability at distance.

This Iver Johnson choke tube features the Mobil choke system, a time-proven interchangeable design that threads securely into compatible 12-gauge shotgun barrels without tools or gunsmithing. The X-full constriction produces approximately 70–75% pattern density at 40 yards, making it ideal for precision shooting scenarios where shot placement and pattern control matter most. The extended profile allows for easier manipulation and removal in field conditions, reducing fumbling during tactical reloads or hunting transitions. Manufactured to exacting tolerances, the tube ensures consistent flight and pattern performance across all standard 12-gauge ammunition types.

Operators and shooters running Iver Johnson or compatible 12-gauge shotguns benefit most from this choke when precision at distance is the mission priority. Competition shooters in slug or buckshot events, law enforcement tactical units, and hunters in open terrain will find the X-full constriction delivers superior results over factory full chokes. Installation is straightforward—simply unscrew the existing choke tube and thread this extended choke in hand-tight, ensuring a solid seat. This tube pairs seamlessly with any Mobil choke-compatible 12-gauge barrel, making it an essential upgrade for shooters seeking maximum range and pattern control.