and cool the cusps suppressor application_number US 21216608 A description referring to the drawings in detail fig2 a 10a show alternate embodiments of applicants cusps suppressor for firearms like elements in the drawings use the same element numbers in the preferred embodiment 100 see fig8 a the cusps is a detachable firearm suppressor comprising a a tubular housing 102 removably affixed to and axially aligned with the muzzle end of a firearm barrel 103 wherein the housing 102 has vent openings 104 radially and longitudinally distributed in its outer surface or wall and the housing 102 contains i a projectile entrance port 105 adjacent the terminus that allows the blast wave and exit gas from a discharged firearm to expand inside the housing 102 ii a projectile exit port 114 and internal support structure at its terminus wherein the preferred exit port is an exit hole 115 in the housing which is significantly larger than the bore i e hole 105 of the barrel 103 and iii a one stage mixer ejector in an expansion chamber 113 comprising a lobed mixer nozzle 116 at the projectile entrance location 105 and a lobed ejector 117 wherein the mixer ejector is adapted in size and shape to use the kinetic energy of the firearm 39 s exit.