Even though the mount on the old 30BA was rock solid, everyone knew it was too big and ugly a brake for most .223 and .30 caliber rifles. You asked for a smaller brake, and now Thunder Beast has delivered.
The new CB-series brake features a four-port, two-chamber design that is up to 40% more efficient than the old 30BA brake when used alone. Thunder Beast was able to reduce the maximum outer diameter of the shoulder surface while increasing the overall conical shoulder area to increase lockup strength. This smaller brake looks great on AR pattern rifles and 6.5mm, 7mm, and .30 caliber precision rifles.