Q LLC. RE-CB-1/2X28 Rear End 1/2"x28 90-Degree Shoulder Quickie Fast-Attach Muzzle BrakeThe Q LLC. Rear End 1/2"x28 90-Degree Shoulder Quickie Fast-Attach Muzzle Brake is a high-performance accessory designed to enhance the functionality of your firearm. This Q RE-CB-1/2X28 muzzle brake features a 90-degree shoulder and is compatible with Q's THUNDER CHICKEN and trash PANDA silencers. Made from durable materials it includes wrench flats for easy installation and removal. The 1/2"x28 threading ensures a secure fit making it an ideal choice for shooters seeking improved recoil management and muzzle control.