Shop › BACKUP THRD PRTCTR 1/2X28 CYL BLK BACKUP THRD PRTCTR 1/2X28 CYL BLK $19.99 Backup Tactical Pistol Thread Protector, Revolver Cylinder, Black Finish, 1/2X28 CYL-BLK Quantity: Add To Cart Added! Backup Tactical Pistol Thread Protector, Revolver Cylinder, Black Finish, 1/2X28 CYL-BLK