Abstract: A firearms flash and sound suppressor formed from ring segments (16) that thread into each other and baffle washers (18) that are captured between the mating joints of the ring segments thus forming chambers out of each ring segment (16). The ring segment male thread (16a) on the end of the suppressor subassembly formed from the joined ring segments (16) has a ring adapter (14) threaded onto it to convert it to a female thread. One end of the suppressor (10) has an end cap (20) threaded into it. The other end of the suppressor (10) has a muzzle adapter (12) threaded into it. The muzzle adapter (12) contains a female threaded hole (12a) to mate with a threaded barrel on a firearm.