Todd Dennis
There are a number of uniquely full preterist conclusions which, though they may not naturally lead to doctrines of Universalism, certainly do lend themselves to this view. And though I do not embrace Universalism myself, I absolutely recognize that to them belongs the progressive banner of full preterism, and that they are correct to declare themselves the most consistent preterists.
With the basic assumption (which I do not share) that the passing of the Mosaic Law was the focus of eschatology, and that AD70 was the "consummation of the ages," a number of Universalist-friendly conclusions emerge. Though not all systems embrace every one of these conclusions, they are all certainly representative of general full preterist views :
1.) Satan was utterly destroyed in AD70
2.) "The Sin" was utterly destroyed in AD70
3.) "The Law" totally passed away in AD70 (Covenant Eschatology in particular)
4.) The "New Heavens and Earth" represents the world post-AD70
5.) The "Age to Come" is the post-AD70 world
It must be clearly stated again that the charge is not that full preterism or covenant eschatology leads to Universalism, but that this trend of thought lends itself to those conclusions.