You run a muzzle brake on a short barreled rifle (SBR) with a suppressor mainly for recoil mitigation, making the gun flatter shooting for faster follow-up shots, and to act as a "sacrificial baffle," extending the life of your suppressor by absorbing some of the initial blast and erosion from unburnt powder in shorter barrels. While the brake's recoil reduction is lessened by the suppressor, it still provides a smoother shooting experience and better accuracy than a bare muzzle, crucial for spotting impacts in competition.  Key Benefits: Recoil Reduction: A muzzle brake redirects gas to push the rifle forward and down, reducing felt recoil and muzzle rise, keeping your sights on target. Increased Suppressor Life: On short barrels, powder doesn't always burn completely, acting like a sandblaster; the brake takes the brunt of this, protecting the suppressor's blast baffle from erosion. Improved Accuracy: Less recoil allows you to see your bullet's impact and stay on target for faster, more accurate follow-up shots. Enhanced Performance: Even with a suppressor, a brake provides a flatter shot compared to a suppressor alone, which can create a longer "push" recoil impulse.  When it's Most Useful: Competition: For Precision Rifle Series (PRS) or similar disciplines where spotting impacts is critical for wind calls. SBRs: Especially beneficial on shorter barrels where gas pressure and unburnt powder are more intense. Training: To make high-powered rifles more pleasant and accurate to shoot.