Firearm sound suppressor with peripheral venting

A method for making a suppressor for a firearm, comprising:

• forming a housing having a proximal end and a distal end;
• arranging a front portion for attenuating temperature and energy of propellant gases, wherein the front portion comprises a series of baffles;
• disposing an annular gas expansion chamber between an outside surface of a plurality of spacers and an inner surface of the housing, the annular gas expansion chamber comprising a continuous chamber surrounding a series of cylindrical gas expansion chambers and extending along a portion of the suppressor's length, and configured for directing a portion of the propellant gases to peripheral vents disposed at the distal end;
• providing a plurality of circumferential apertures disposed radially between the cylindrical gas expansion chambers and the annular gas expansion chamber;
• configuring a rear portion comprising a back end member defining a lateral gas expansion chamber and a primary gas expansion chamber for deflecting and rebounding a portion of the propellant gases before entering the annular gas expansion chamber, the back end member comprising at least one curved interior surface adapted to deflect the portion of the propellant gases toward one or more vents disposed at a rear of the primary gas expansion chamber, the at least one curved interior surface configured for withstanding pressure and temperature of the propellant gases, the primary gas expansion chamber and the one or more vents including one or more ledges for directing the propellant gases toward a blast suppression chamber;
• disposing the blast suppression chamber between a tapered blast deflector and a portion of the at least one curved interior surface, such that the blast suppression chamber surrounds the lateral gas expansion chamber;
• and
• diverting, by deflecting off of the at least one curved interior surface, a first portion of the propellant gases through the annular gas expansion chamber prior to mixing the first portion of the propellant gases with a second portion of the propellant gases introduced through the plurality of circumferential apertures into the annular gas expansion chamber.