Mounting rail for firearm

A mounting rail for a firearm, wherein the rail comprises:

• at least two catches arranged on a flat upper surface of the rail, wherein the at least two catches serve as a means of fixation for at least one accessory,
• wherein the rail comprises a housing that extends longitudinally in a longitudinal direction, wherein the housing is adapted to receive a printed circuit board configured to provide an electrical connection with the at least one accessory,
• wherein the housing is partially defined by at least two recesses, each recess is arranged between and opens onto two opposite flanks of the corresponding catch, such that a top of the corresponding catch extends transversely on either side of a median plane of the rail above the recess, and in that each recess has a ceiling arranged beneath the top of the corresponding catch;
• wherein the ceiling of each recess is disposed at a height of between 10% and 60% of the height of the corresponding catch relative to a line at a base of the catch, wherein the line is defined by an intersection of one of the two opposed flanks and the upper surface;
• wherein each recess extends from a lower surface of the rail to the ceiling.