CaliberCompatibility: .223 REM/5.56 NATO to .300 RUM – Accessories: Bravo – Weight: 14.7 oz Long 10.4 oz Short – Length: Long: 6.9 Short: 5.1 With Anchor Brake – Diameter: 1.73 – Materials: 17-4 SS – Muzzle Average: 5.56 NATO: Long 127.4 dB Short 132.8 dB 300BLK: Long 119.2 dB Short 126.1 dB 308 WIN Long 128.6 dB Short 134.1 dB 300 WM Long 132.9 dB Short 140.9 dB – Ships With: (1) 5/8 x 24 Bravo Direct Thread (1) Spanner Wrench (1) Bravo Multi-Tool (1) Radial Tool (1) Scythe Single Port Anchor Brake