Dead Air P-Series Piston (M13.5x1LH) The P Series Piston with steel body; black cerakote finish; and M13.5x1LH thread pattern. The Dead Air Piston is designed for use in conjunction with the P-Series booster assembly. Compatible with the Ghost-45M, Primal (with P-Series adapter) and Wolfman suppressors, this piston features M13.5x1LH threads; it is also made of high-quality steel and finished with black cerakote to ensure a long lifetime of reliable service.



