The most common remark from those first viewing this brake are..."your brake is big and expensive." There are two things to remember here.
1. Size is your friend. More surface area for the gasses to act upon add to the effect. The brake can be turned down somewhat to a smaller profile- but only to a degree.
2. $235. It is expensive because it is worth it. The brake is made from 17-4 Precipitation hardened steel. The use of 17-4PH nearly doubles production time and more than doubles material costs. This alloy is the king of stainless. It actually gets tougher with use and heat, while lesser alloys erode, fatigue and fail.
The secret to the SAC Brake's success is the unique chamber geometry we've created. Each brake is made caliber specific to optimize energy release.
There is nothing random or arbitrary about the design of our proprietary muzzle brake. We spent over a year prototyping and experimenting and revising the design. Various brakes were mocked up in aluminum to study the properties and motion of high pressure, high temperature gas. We made protos to demonstrate one principal, then another brake to test another. Final results were gathered by free hanging a rifle that was fired by a hydraulic hose. Brakes were fitted, fired, and removed. The process was captured on a high speed digital camera. Our brake demonstrated an 80% decrease in recoil from a 300 win mag... showing only 8 inches of free recoil. The next best, a popular one among custom gun builders showed a 14" free swing. For control, the gun was tested without a brake. The gun moved 40" rearward while hanging free.