The M-LOK T-Nut replacement set is a replacement hardware pack designed for use with all M-LOK accessories. Made of 4140 chromoly steel with a Mil-Spec Manganese phosphate finish, The hardware set is supplied with two T-Nuts as well as two different length button-head cap screws to ensure compatibility with various hand guard or forend thicknesses. A self-locking reusable thread patch is added to the screws to ensure a secure fit upon installation.