mchughcb Ive fired a few rounds with and without the brake and there doesnt seem to be a lot of recoil reduction, maybe 10% and a little bit more noise when its on.
Not sure they work that well with such a big hole at such low speeds, and I the suspect mercury recoil reducers add more weight rather than softening the felt recoil.
Hey the gun came with it so Im going to use em