Caliber: .300 Black Out – Ammo Type: 300 Black Out (Sub- or Supersonic) – Length: 8.0 inches – Weight: 20.3 ounces – Diameter: 1.5 inches – Highly specialized V-shaped baffles provide unprecedented levels of sound attenuation for a .30 caliber suppressor – Designed for 300 Black Out subsonic and supersonic ammo extremely effective for use with .308 300 Win Mag and 5.56mm rounds too – Solid Inconel blast baffle increases durability – Patented Fast-Attach mounting system securely fastens and permits removal of the suppressor in seconds and ensures minimal and consistent point-of-impact shift – Minimal and consistent point-of-impact shift – Lightweight and compact for minimal effect on weapon-handling characteristics – Constructed of advanced high-temperature alloy and stainless steel to remain lightweight and provide a long service life – Made in the USA