Fits standard 1" diameter magazine extensions and provides easy mounting for tactical lights and lasers. The mount is 4.1" and has three standard picatinny rails positioned 90 degrees apart which allows for plenty of options when mounting accessories to the shotgun. The mount uses an easy to install clamping system which will not mar extensions, yet is strong and secure.

Note: Some semi-automatic shotguns are weight sensitive and accessories adding weight may cause short cycling with some ammunition. Function testing after installation is recommended.