Home / Accessory-Silencer Accessories / Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH View cart “Dead Air Armament SANDMAN 5.56 FRONT CAP” has been added to your cart. Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH$7495 $7135 Only 2 left in stock Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH quantity Add to cart SKU: YHM-2060-M Category: Accessory-Silencer Accessories Product ID: 26183 Description Description 9mm Piston For R9 & N2ONot For Sidewinder Suppressors Related products Sale! Rugged Suppressors TITANIUM FRONT CAP 7.62 $10000 $8715 Gemtech ADAPTER MM9 FTM 1/2-28 $7500 Sale! Dead Air Armament SANDMAN 5.56 FRONT CAP $6900 $6042 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 $7495 $7135