A 6-Choke Tube Set by Pure Gold for Beretta OptimaChoke 12 Gauge Guns. Skeet, Improved Cylinder, Modified, Improved Modified, Light Full, Full. These fit Beretta 682, some 687 models, Silver Hawk, DT10, and some 391 model shotguns with Optima-Choke barrels. These are not for Optima-Choke Plus or Optima-Choke HP barrels. If you're not sure which tubes your gun uses, read this information from Beretta.
The start of the threaded portion of the Optima-Choke tube is located a nominal 2.00 inches from the breech end of the choke tube. The length of the threaded portion is a nominal 0.625 inch.The major diameter of the choke tube thread is 0.787 inch (20 mm). The tubes are used but clean and bright inside and out. You might find firing residue in some of the ports upon close inspection. The Full tube has a very slight flat spot at the breech end. It's mostly detectable by feel.
I suspect that it takes a round shape when it's tightened in the barrel and doesn't affect function. It's one of several Beretta OptimaChoke tubes we have for sale, both Beretta and Extreme Choke titanium tubes. See our listings for a variety of firearms related items, including original military and commercial parts, scopes, reloading items, accessories, tools, books, and more, with more items added daily. The item "Pure Gold Beretta OptimaChoke Extended Sporting Choke Tube Set of 6, 12 Gauge" is in sale since Wednesday, January 20, 2021. This item is in the category "Sporting Goods\Hunting\Range & Shooting Accessories\Skeet & Trap Shooting".The seller is "singer45acp" and is located in Anaheim, California. This item can be shipped to United States.