Optimized for 5.56 gas-operated rifles the EOS-556 is a true to hell and back hard-use suppressor. Short lightweight low flash and extremely durable it delivers class-leading suppression in the K-length suppressor category. – Class Leading Suppression – Durable 3D Printed 718 Inconel Construction – Low Back Pressure Design – Passes SOCOM Stress Test for Durability – Integrated Flash Hider – 12.5oz Weight – HUB Compatible and includes Titanium DT 1/2×28 Mount