The tacstar shotgun rail mount is designed to fit standard 1" diameter magazine extensions and allows for mounting of tactical lights and/or lasers.The mount has three standard picatinny rails positioned 90 degrees apart which allows for plenty of options when mounting accessories to the shotgun.It uses an easy to install clamping system which will not mar extensions yet is strong and secure.Rails: BlackType: RailFirearm Type: Shotgun Rail ShortFirearm Model: PicatinnyMaterial: 1.8"Finish: Black