The OptimaChoke tube is longer and slimmer than conventional Mobilchoke tubes. Thanks to the elongated cone it minimize pellet deformation and improve shot patterns. The various versions are fully interchangeable on 12 gauge guns with Optima Bore barrels. The choke tube is for 12 gauge shotguns with the OptimaChoke system only.
Specifications:

Type	Extended
Gauge	12 Gauge
Choke Size	Cylinder
Configuration	Optima-Choke
Finish	Silver w/Colored Band
Constriction	.732
Chokes Included	1
Recommended For	20 yds
Material	17-4 Stainless Steel
Approved	Steel,Lead,Non-Tox
Ported	No