Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR M13.5X1 LH # 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 Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 Original price was: $9400.$8606Current price is: $8606. Sale! Dead Air Armament BOOSTER ASSEMBLY GHOST/WOLFMAN $14900 Original price was: $14900.$12618Current price is: $12618. SilencerCo O-RING BOOSTER PACK $900 Sale! Dead Air Armament XENO MOUNT MUZZLE BRAKE 1/2X28 $8900 Original price was: $8900.$8472Current price is: $8472.