Home / Accessory-Silencer Accessories / Yankee Hill Machine Company QD MOUNT THEAD PROTECTOR View cart “Gemtech GM9 THREAD REAR MOUNT M18X1RH” has been added to your cart. Yankee Hill Machine Company QD MOUNT THEAD PROTECTOR$1995 Only 2 left in stock Yankee Hill Machine Company QD MOUNT THEAD PROTECTOR quantity Add to cart SKU: YHM-3114 Category: Accessory-Silencer Accessories Product ID: 32647 Description Description Related products Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 1/2X36 $8900 Original price was: $8900.$8211Current price is: $8211. Sale! Rugged Suppressors OBSIDIAN9 3 LUG ADAPT 13.5x1L $8500 Original price was: $8500.$7561Current price is: $7561. SilencerCo O-RING BOOSTER PACK $900 Sale! Dead Air Armament GHOST FIXED MOUNT M13.5X1LH $8900 Original price was: $8900.$7865Current price is: $7865.