The Energetic Armament VOX S suppressor is built from a nickel-cobalt alloy, a material commonly used in aerospace engineering. Designed for both sound suppression and heavy firing schedules, the VOX S offers versatility and durability. It has no barrel length restrictions, is rated for cartridges up to .300 RUM, and is full-auto rated for 5.56mm, .300BLK, and 7.62mm rifles. Energetic Armament's innovative manufacturing process results in an incredibly durable suppressor weighing only 12.9 oz. The tubeless baffle design optimizes sound reduction, and an optional silicone wipe system in the end cap can further minimize noise and flash. The VOX S utilizes the near-universal 1.375" mounting system, compatible with a variety of quick-detach systems. Suppressor Ratings and Restrictions: 7.62mm/.30 cal bore 5.56mm/.308 win/.300 BLK full auto 300 WM / 300 RUM No barrel length restrictions