Home / Accessory-Silencer Accessories / Yankee Hill Machine Company NIELSEN PISTON 9MM M13.5X1LH View cart “Dead Air Armament KEYMO FLASH HIDER M14X1LH” 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 Gemtech ADAPTER S&W M&P22C/22LR $6200 Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 $16957 Sale! SilencerCo BRAVO ANCHOR BRAKE 458CAL BLK $9400 $8606 Sale! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 $8715