Our gill style brakes differ significantly from most other brakes in the geometry of the air redirection. Unlike the cheap and easy to make brakes that have a series of ports milled into a piece of barstock at 90 degrees opposing we have a much more complex geometry.
This not only has incurred significant engineering costs but is a much more intricate brake to manufacture. It also makes for a far more efficient recoil reduction device.
Gill style brakes require being indexed to top dead center, unlike the radial port designed brakes, which are simply a bunch of holes drilled through a piece of barstock. Not having a gill style brake indexed to true top dead center can make the muzzle move in directions other than directly rearward and in the case of the simple design brakes, up as well.
With our brakes not only controlling rearward recoil but muzzle climb as well indexing is critical. Being as a brake is put on with some torque to ensure it does not come off, this does stretch the threads both of the barrel and the brake slightly, just enough that if the brake is taken off it will not positively index to top dead center, hence we apply permanent thread locking compound to the threads to reduce the amount of torque required while also ensuring that the brake does not come off .
To have a brake mounted with as little as .01 degree off of TDC will make the rifle barrel "jump" to 1 direction which will result in poorer accuracy.