Home / Accessory-Silencer Accessories / Yankee Hill Machine Company UNIV RIFLE ADAPTER M13.5X1 LH# View cart “Dead Air Armament KEYMO FLASH HIDER M14X1LH” has been added to your cart. Sale! Yankee Hill Machine Company UNIV RIFLE ADAPTER M13.5X1 LH#$6850 $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 Gemtech THREAD PROTECTOR 1/2-28 RF $1800 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 1/2X36 $8900 $8211 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24 $7495 $7135 Gemtech ADAPTER MM9 FTM 1/2-28 $7500