The Yankee Hill Mini QD Muzzle Brake Suppressor Adapter has been a the next greatly anticipated fast attach sound suppressor system for YHM. The Mini QD brake is YHM engineering perfection. Compact at only 1.6 inches and weighing in 3.2oz the Mini QD brake was designed for today's competitive shooter. No short cuts were taken, and users will find that the Mini QD brake is still capable of being shot comfortably unsuppressed as well as suppressed. With a through bore of .350" the Mini QD Brakes are compatible with all of our YHM Phantoms, Turbos, Turbo Ks, Resonators, and Nitros.