The YHM Nielsen Piston M13.5-1LH 9MM in silver from Yankee Hill Machine is an essential component for enhancing your shooting experience with suppressors. Designed for compatibility with YHM's booster housing YHM-2055 and a variety of popular pistol suppressors, this piston is expertly crafted from heat-treated 17-4 stainless steel, ensuring maximum durability and resistance to corrosion. Weighing in at just 1.40 oz, it offers a lightweight solution without compromising strength. The Nielsen Piston features ten adjustment points, allowing you to easily zero any impact shift, making it a versatile choice for precision shooting. Available in multiple thread patterns, it fits most firearms, ensuring that you can optimize your suppressor setup for a wide range of applications. Whether you are a seasoned hunter or a recreational shooter, the YHM Nielsen Piston is designed to enhance your firearm's performance while providing the reliability and quality that Yankee Hill Machine is known for.