Rearden MFG 10148 Atlas Bravo, 1.375x24 Threads, Titanium Mount
Thread Pitch - 1.375x24 Weight - 1.2 ozLength - 0.50"Compatible with all Rearden muzzle devicesCompatible with Q Cherry Bomb and Other Plan B Compatible Muzzle DevicesTitaniumASR (1.375a ^2 - 24) Threaded Tubes and SuppressorsDLC + Sline coatedThe Atlas provides a mount interface for suppressors with inside diameter threading of 1.375-24