Dead Air Sandman-L Quick Detach 7.62mm Suppressor w/ Brake 5/8" x 24, Black. For those demanding absolute performance, the Sandman-L delivers a true sound reduction of 31 dB when firing standard 7.62 ammunition. Manufactured from stainless steel with a solid-weld Stellite baffle core and a detachable front cap, the Sandman-L is compact and lightweight while sharing the class-leading features of the S & K series. Total length: 8.9" ; diameter: 1.5" ; weight: 21.8 oz . Each unit ships with a 5/8" x 24 TPI quick-attach Keymount muzzle brake designed for minimal concussion. Product Details Manufacturer: Dead Air Silencers Model: Sandman-L Calibers: 7.62mm (.308, 7.62x51mm), .300 BLK (300 Blackout), 5.56mm (.223), 6.8mm, 7.62x39mm, .300 WM Material: Stainless steel body with Stellite baffle core Finish / Color: Black Cerakote Sound Reduction: 31 dB (standard 7.62 ammo) Length: 8.9" (8-9/10") Diameter: 1.5" Weight: 21.8 oz Mount / Attachment: Quick-Detach (Fast-Attach) Keymount Included: 5/8" x 24 TPI quick-detach Keymount muzzle brake (brake included) Barrel Thread Pitch: 5/8" x 24 TPI Firearm Type: Rifle Suppressor Attachment Method: Fast-Attach / Quick Detach Notes: Designed for use with standard 7.62 and listed compatible calibers. Always follow local laws and manufacturer instructions when installing and using a suppressor.