Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR M13.5X1 LH View cart “Gemtech ADAPTER GM-45/BLACKSIDE 1/2-28” has been added to your cart. Gemtech THREAD PROTECTOR M13.5X1 LH$1800 Only 1 left in stock Gemtech THREAD PROTECTOR M13.5X1 LH quantity Add to cart SKU: 12223 Category: Accessory-Silencer Accessories Product ID: 26732 Description Description M13.5X1 LH Thread Protector Related products Sale! SIG SAUER MUZZLE BRK CL 7.62MM 25 DEG $17999 $16957 Sale! Yankee Hill Machine Company SIDEWINDER PISTON 45ACP 16X1LH $7495 $7135 Sale! Gemtech ADAPTER UMAREX RIFLES $4500 $4183 Gemtech THREAD PROTECTOR 1/2-28 RF $1800