YHM NIELSEN PISTON M16X1LH

The Yankee Hill Machine Nielsen Piston M16x1LH is a precision threaded adapter designed to optimize suppressor performance on rifles and pistols that accept M16x1 left-hand threads. If you're running a YHM suppressor system or integrating quality aftermarket suppressors into your setup, this piston gives you the tuning capability that serious shooters need. Built from heat-treated 17-4 stainless steel, it's engineered to handle the thermal and mechanical stress of suppressed fire while resisting corrosion—critical when your gear is exposed to moisture and carbon buildup.

The Nielsen Piston works with YHM's booster housing (YHM-2055) and is compatible with many popular pistol suppressors, making it a versatile choice whether you're setting up a dedicated suppressed host or adding flexibility to your existing collection. The standout feature is its 10 adjustment points, allowing you to fine-tune and zero out any point-of-aim shift that can occur when you attach or remove a suppressor. This adjustability is what separates a merely functional setup from one that groups consistently.

Weighing just 1.40 oz, the Nielsen Piston adds minimal signature to your system while delivering the precision and durability that Yankee Hill Machine is known for. It's the kind of component that works quietly in the background but makes a measurable difference in reliability and accuracy when suppressors are in play. Note that this piston is not compatible with Sidewinder suppressors.