FEATURES:
-Cylinder Choke
-Can be used on all Mobilchoke barrels
-Made of high quality steel, they are of a great stress resistance due to heat treatments
-The end of the choke is identified by a colored alloy stripe for fast & easy indication of the costriction
-Fits Beretta Silver Pigeon I (field models), A300 Outlander, 687 (field models), Some 391 Models