What type of choke system do baikal shotguns use?

Baikal shotguns typically use a fixed choke system, meaning that the constriction of the barrel is permanent and not interchangeable. This design can feature various choke constrictions, such as cylinder, improved cylinder, modified, and full, depending on the specific model. Some Baikal models may also offer removable chokes, allowing for greater versatility in shot pattern adjustments.