Briley Beretta Optima Plus Flush Black Oxide Choke 12 Gauge Cylinder .000. This choke tube by Briley is one of the few that has the ability to produce a 'Flush' fit with the head of the choke tube completely covering the bore. By doing this the wall of the choke tube is pushed out giving you the most precise shot possible. The Briley Beretta Optima Plus Shotgun Choke Tube features a longer parallel section allowing for denser and faster downrange shot placement. This also promotes tighter pellet deposition resulting in denser and more uniform pellets. The tough Hi-Viz ink used in the Briley Beretta Optima+ Tube Choke Tube is a tough inherently abrasion-resistant coating which can stand up to even the toughest of abuse. Specifications for Briley Beretta Optima Plus Flush Choke Tube: Manufacturer: Briley Gauge: 12 Choke Tube System: Beretta Optima Plus Gun Make: Beretta Package Contents: Briley Beretta Optima Plus Flush Choke Tube Briley BOPF12CYL: Beretta Optima Plus Flush Black Oxide Choke 12 Gauge Cylinder .000