Iver Johnson Choke Tube Features The Iver Johnson Choke Tube is machined from stainless steel to deliver a full constriction pattern tightening shot density for hunters who need reach on pheasant dove and other upland targets. Its Mobil style threads ensure a precise secure fit in shotguns built to that choke standard so patterns stay consistent shot after shot. The extended profile sits proud of the barrel for quick visual identification and easier hand tightening or removal in the field. Full chokes like this one are a favorite for longer range shotgunning where a tighter pattern matters more than wide spread. Built specifically for 28 gauge shotguns this choke tube gives shooters of the smaller bore a way to extend their effective range without switching guns. The stainless steel construction resists corrosion and wear from repeated cleaning and weather exposure in the field. Its compact lightweight design adds negligible weight to the muzzle while delivering a noticeable difference in pattern performance. The Iver Johnson Choke Tube rounds out a 28 gauge shotgun setup for hunters who want tighter patterns on demand. Iver Johnson Choke Tube Specifications Manufacturer: Iver Johnson Choke: Full Flush or Extended: Extended Gauge: 28 GA Material: Stainless Steel Thread Pattern: Mobil Available At: GrabAGun