Attach your Primal, Wolfman, or Ghost 45 to a 3-Lug host firearm. The Dead Air 3-Lug is a solid steel design that provides precision fitment and alignment. The spring is a heavier design than the competition, helping eliminate the inherent wobble found in most 3-Lug devices. The body is a "sealed" design to help keep carbon out, and can also be broken down for maintenance.