YHM is the leader in affordable, quality sound suppression. We offer models for a variety of firearms in a selection of materials from Steel to Titanium to Inconel, all at affordable prices. Every Q.D. suppressor includes the Q.D. mount in the price of the suppressor. There are no "hidden" costs. Every sound suppressor YHM manufactures is full-auto rated and warranted for life from defects in material and workmanship.