RANGER 7 MISSION FOCUSED AND BUILT TO ENDURE. This new robust silencer from AAC is engineered for the toughest usage and conditions. With a serviceable front end cap, full-auto compatibility, and an included 1.375-24 mount, the versatile Ranger Series is focused on reliable performance. Removable front end cap Full auto rated 24dB reduction in 300WM with 26a ^2 bolt action 30dB on a 20a ^2 Remington 700 using M80 ammo CALIBERS 300 Win Mag 308 Win WEIGHT,17.2 oz LENGTH,6.75",With Direct Thread Mount DIAMETER 1.5" MATERIALS 718 Inconel and 17-4 H900 Stainless Steel FINISH High Temp Cerakote ATTACHMENT 1.375-24 Universal Mount* REDUCTION 24dB 30dB S.P.L. 138dB**