The Iver Johnson choke tube for 12 gauge shotguns represents a precision-crafted stainless steel accessory designed to extend the versatility of your firearm, delivering reliable performance in a range of field and range scenarios. This extended choke tube features a Mobil thread pattern and is sized specifically for 12 gauge barrels, enabling a precise fit that maintains bore integrity while offering durable corrosion resistance in demanding conditions. With an Improved Modified chambering, it provides a balanced spread suitable for larger birds or improved birds in closer quarters, giving you enhanced control over shot string and improved hit potential at practical hunting distances. The stainless steel construction ensures long-lasting durability against heat, residue, and outdoor exposure, while the extended design helps facilitate easier cleaning and a more front-end consistent pattern. Ideal for upland and waterfowl applications where mid-range precision is valued, this choke tube integrates smoothly with existing barrels and complements standard shot payloads, allowing you to fine-tune choke performance without sacrificing reliability. A trusted choice for hunters seeking dependable, field-ready choke adjustments that maintain consistent performance across a variety of conditions.