Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR M13.5X1 LH View cart “Yankee Hill Machine Company SIDEWINDER PISTON 45ACP.578X28” has been added to your cart. Gemtech THREAD PROTECTOR M13.5X1 LH$1800 Out of stock SKU: 12223 Category: Accessory-Silencer Accessories Product ID: 26732 Description Description M13.5X1 LH Thread Protector Related products Gemtech ADAPTER MM9 FTM 1/2-28 $7500 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 $8211 Sale! Dead Air Armament XENO MOUNT FLASH HIDER 5/8X24 $8900 $8472 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 $8715