Specs : - Diameter: 1.5 - Overall Length: 6.3 - Length Added: 5 when using EZ Brake 4 when using longer devices - Weight: 13 Ounces - Materials: High strength high temperature corrosion resistant 17-4PH Stainless Steel - Attachment: .22 cal/5.56mm Taper Mount devices - DB Attenuation: 5.56mm (131.5 DB) 22LR (115 DB) - Finish: QPQ Melonite - Full Auto Rated: Yes - Features : - 17-4 Stainless Steel Fully H900 Heat Treated - Tig Fusion Welded - Minimal and Repeatable POI shift - Rock Solid Mounting - Low Profile Flash Suppressor - Patented Ratchet-Lok end cap - ECO-FLOW baffle system for improved performance - Taper Mount Compatible - Taper Mount EZ Brake 1/2x28 .22 cal Included - Rated up to .22-250 REM - QPQ Melonite - Perpetual Lifetime Warranty