Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR M13.5X1 LH View cart “SilencerCo O-RING BOOSTER PACK” 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 Sale! Dead Air Armament WOLVERINE INSERT 15MM RH HK $8900 $7865 Sale! SilencerCo BRAVO ANCHOR BRAKE 30CAL BLACK $9400 $8606 SilencerCo DELTA 1/2X28 THREAD SPACER $1900 Sale! SilencerCo BRAVO ANCHOR BRAKE 458CAL BLK $9400 $8606