Shield Arms Revolver Optic Conversion Red Dot Sight Mount RMS Footprint Black. O.C.) allows for the process of modifying a revolver to accept a red dot sight (RDS). Traditionally revolvers have been equipped with iron sights but the trend in recent years is to adapt them to modern sighting systems such as red dot optics to improve accuracy speed of target acquisition and overall performance. Specifications for Shield Arms Revolver Optic Conversion Red Dot Sight Mount: Manufacturer: Shield Arms Color: Black Finish: Anodized Gun Make: Smith & Wesson Gun Type: Revolver Gun Model: Smith & Wesson Model 442 Revolver Fabric/Material: Aluminum Package Contents: Shield Arms Revolver Optic Conversion Red Dot Sight Mount Mounting Hardware What firearm models does the manufacturer say Shield Arms Revolver Optic Conversion Red Dot Sight Mount is compatible with? The manufacturer says that Shield Arms Revolver Optic Conversion Red Dot Sight Mount is compatible with Smith & Wesson Model 442 RevolverShield Arms SAROC442RMSC: Revolver Optic Conversion Red Dot Sight Mount RMS Footprint Black