The Beretta MobilChoke choke tubes are factory OEM replacements for 12 gauge shotguns with the MobilChoke system.Fits Beretta Silver Pigeon I (field models), A300 Outlander, 687 (field models) and some 391 models
Specifications:

Type	Flush
Gauge	12 Gauge
Choke Size	Improved Modified
Configuration	Mobilchoke
Finish	Silver
Constriction	.007
Chokes Included	1
Recommended For	50+ yds
Material	Steel
Approved	Steel,Lead,Non-Tox
Ported	No