Installed a Ultradyne Apollo Max on my S&W Sporter 2. Greatly reduced muzzle jump, BUT gotta wear shooting glasses or get blinded by the gas. Gas blows back and covers my scope glass as well as my shooting glasses after about 30 rounds. Also gets in my lungs and mouth. I can handle the noise with muffs/plugs. I can't think of a solution except to reinstall the factory flash hider. Too bad because follow up shots are greatly improved with the brake.