Compatible with Plan B type bipods, these components require the use of an alignment rod to ensure the correct setup of the entire system. It is essential to clean all surfaces and properly torque and secure the muzzle device to the barrel using Rockset. Be aware that using this on a Q can will void your warranty. The muzzle device should be torqued to approximately 15 ft-lb - 25 ft-lb, ensuring it is square against the shoulder. When attaching the silencer to the muzzle device, ensure that the threads and tapers are clean. The suppressor should be torqued to 10 ft-lb and alignment should be confirmed. The nitride finish enhances the seal, making it crucial to properly torque and secure the muzzle device to the barrel. 17-4 PH Compatible with Atlas and Atlas XL Compatible with Plan B Black nitride coating with a surface hardness of 67 HRC