Home / Accessory-Silencer Accessories / Yankee Hill Machine Company UNIV RIFLE ADAPTER M13.5X1 LH# View cart “Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24” has been added to your cart. Sale! Yankee Hill Machine Company UNIV RIFLE ADAPTER M13.5X1 LH#$6850 Original price was: $6850.$6614Current price is: $6614. Out of stock SKU: YHM-2145-M Category: Accessory-Silencer Accessories Product ID: 30423 Description Description Fits any 1-3/8-24 Rear ThreadM13.5X1 LH TPIFits Most Suppressor Brands Related products Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 Original price was: $10000.$8715Current price is: $8715. SilencerCo O-RING BOOSTER PACK $900 Sale! Dead Air Armament HUB DIRECT THRD MNT M18X1.5 AI $8900 Original price was: $8900.$8351Current price is: $8351.