Welcome to Atlantic Coast Machine Manufacturers of Great Sound Suppressors. Atlantic Coast Machine(ACM), a manufacturer of sound suppressors (a.k.a. silencers) has been in business for many years.After a brief hiatus building a new manufacturing facility, we have re-emerged onto the Class 3 market for Military, Law Enforcement and Civilian sales of some of the best and most cost effective silencers available.We invite you to take a moment to browse our site, compare the value, and decide for you