Inlet these Sawket inserts into your stock forend to allow a clean and secure attachment of other accessories utilizing M-Lok geometry, like R-Lock/Arca rails or picattiny sections.

The inlet geometry is simple, but best left to a machinist or gunsmith with a milling machine.  A 5/8" wide slot is milled into the forend, .300" deep. Through holes are drilled for the mounting screws with adjacent pockets for t-nuts sunk into the barrel channel.  These inserts have been installed on wood and fiberglass/carbon type stocks.  In some stocks, the mounting screws can be tapped into aluminum molded into the stocks for a very secure installation.