Caliber: 5.56 mm (.223 caliber) - Length: 5.2 inches - Weight: 14.5 ounces - Diameter: 1.5 inches - Advanced features based off the Winner of US Special Operations Command (USSOCOM) extensive and rigorous suppressor trial - 5-inch overall length for minimum overall weapon length and minimum impact on handling characteristics (1.2 inches shorter and 2.5 ounces lighter than SOCOM556-RC) - Integrated blast shield increases durability - Patent-pending front-plate design and proprietary gas-flow improvements virtually eliminate first-round flash - Effective attenuation of noise and dust signatures - Patented Fast-Attach