Home / Accessory-Silencer Accessories / Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH View cart “SIG SAUER FLASH HIDER CL 5.56MM 90 DEG” 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! Dead Air Armament XENO MOUNT MUZZLE BRAKE 1/2X28 $8900 Original price was: $8900.$8472Current price is: $8472. Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7895 Original price was: $7895.$7188Current price is: $7188. Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 Original price was: $17999.$16957Current price is: $16957.