Home / Accessory-Silencer Accessories / Gemtech THREAD PROTECTOR 1/2-28 RF View cart “Yankee Hill Machine Company SIDEWINDER PISTON 40SW 9/16X24” has been added to your cart. Gemtech THREAD PROTECTOR 1/2-28 RF$1800 In stock Gemtech THREAD PROTECTOR 1/2-28 RF quantity Add to cart SKU: 12222 Category: Accessory-Silencer Accessories Product ID: 26738 Description Description 1/2-28 Thread Protector Related products Sale! SilencerCo 3-LUG MUZZLE DEVICE 9MM 5/8X24 $8900 Original price was: $8900.$8211Current price is: $8211. Gemtech ADAPTER MM9 FTM 1/2-28 $7500 Sale! Rugged Suppressors R3 FLASH HIDER M18X1 $10000 Original price was: $10000.$8715Current price is: $8715. Sale! Dead Air Armament WOLVERINE INSERT 24MM RH LONG $8900 Original price was: $8900.$7865Current price is: $7865.