Front rail mount installs in front swivel location on M14 stocks. Allows mounting rail mount accessories, such as a bipod, while maintaining a sling swivel loop. This model is aluminum and mounts with two screws through the standard front swivel mounting holes. Requires removal of the front swivel and then re-uses the swivel as part of the assembly. If you are installing this on a new stock (or if you mangle your front swivel drilling it out), there is an option to add a new production front swivel.