Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR M13.5X1 LH View cart “Dead Air Armament WOLVERINE INSERT 15MM RH HK” 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 SilencerCo O-RING BOOSTER PACK $900 Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 1/2X36 $8900 $8211 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 9MM 1/2X28 $7495 $7135 Gemtech GM9 THREAD REAR MOUNT M18X1RH $9100