Home / Accessory-Silencer Accessories / Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. Sale! Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH$7895 Original price was: $7895.$7188Current price is: $7188. 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! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 Original price was: $9400.$8606Current price is: $8606. Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100 Sale! Dead Air Armament XENO MOUNT MUZZLE BRAKE 5/8X24 $8900 Original price was: $8900.$8472Current price is: $8472. Sale! Rugged Suppressors OBSIDIAN9 3 LUG ADAPT 13.5x1L $8500 Original price was: $8500.$7561Current price is: $7561.