POP,
This brake is held on with a collet which clamps the brake to the barrel. Yes, it can be removed and reinstalled but will most likely need to be retuned when reinstalled unless you keep your rotation and depth the same. this style brake can be prone to sliding and marring your barrel if the collet is not tightened properly . They claim up to 40% recoil reduction, this would be in an ideal situation such as a .243 with 55gr. bullets. This brake will not be as efficient as most hole style brakes and won't come close to a baffle style brake.To the best of my knowlede they use a large hole through the brake for a "one size fits all" calibers. Which also reduces the efficiency of this brake,especially for smaller calibers. Another reason I would shy away from this brake is that in most cases the outside of the barrel is not true with the inside of the barrel. Which will cause the brake to pull off more gas on one side than the other.
also for the price you could just about have any brake custom fit to your barrel with a thread cap for the times the brake is off the gun, and it will not need tuning.
I am in no way frowning on the quality or price of this brake,I'm just saying it is what it is.
When I install a brake on a barrel the bore of the barrel is dialed in to +/- .0001 thus when the brake is installed the hole in the brake is running true with the bore.
Also on the brakes I make the hole through the brake is .020-.030 over the bullet diameter.
The reason I don't give any recoil reduction percentages is that it varies so much with cartridge,caliber and bullet weight.
just my 2cents.
308nate