The Kryptos is a full-auto-rated over-the-barrel suppressor constructed from aerospace-welded, rugged 17-4 and 304 stainless steel. Its patented baffle system ensures superior cross-sectional structural integrity that will withstand harsh environments, and the intense concussion caused by grueling round counts. The durable TROY Kryptos Suppressor is built to endure a lifetime of long-range shooting, demanding firing schedules, and tough treks over rough terrain