Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR 1/2-28 RF # View cart “SilencerCo O-RING BOOSTER PACK” has been added to your cart. Gemtech THREAD PROTECTOR 1/2-28 RF #$1800 Out of stock SKU: 12222 Category: Accessory-Silencer Accessories Product ID: 26738 Description Description 1/2-28 Thread Protector Related products Sale! Dead Air Armament XENO MOUNT FLASH HIDER 5/8X24 $8900 Original price was: $8900.$8472Current price is: $8472. Gemtech PISTON GM-45 LID USP $14800 Sale! Rugged Suppressors R3 FLASH HIDER 3/4X24 $10000 Original price was: $10000.$8715Current price is: $8715. Sale! SIG SAUER FLASH HIDER CL 5.56MM 90 DEG $17999 Original price was: $17999.$16957Current price is: $16957.