20 Gauge

20 Gauge Shotguns are normally found with 2 3/4″chambers.  with lengths of 18″ to 32″. Shotguns use many of the same actions as rifles—the pump-action, semi-automatic, and bolt-action. They also use a break-action as either a single barrel or double barrels. The double barrels can be arranged horizontally (side-by-side) or vertically (over-under).

There are four common types of shotgun actions:

  • Bolt-action
  • Pump-action
  • Semi-automatic action
  • Break-action

*Break-action is the only type of Shotgun that can use the Adapters we make and sell

A 20–gauge shotguns bore is nominally 15.6 mm (0.615 in)

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