The Rugged Suppressors Piston 9/16x24 is designed to create a full circumference gas seal, significantly lowering gas blowback for a more enjoyable shooting experience. This piston is machined from 17-4 Stainless Steel and heat treated for durability, ensuring it is built to last.Key FeaturesThread Pattern: Features a 9/16"x24 thread pattern for compatibility with specific suppressors.Length: Measures 1.5 inches in length.