I recently bought a Versa-Pack. The synthetic fore-end does not fit either barrel worth a darn. The o-ring trick does not work very well with the synthetic fore-end due to the way the fore-end is molded. Washers and the like proved useless as well. I did however have on hand some very tough and hard leather approx. 3/16" thick. I cut several pieces into rectangles that measured about 3/4" x 1". I then trimmed to fit the fore-end. I then drilled a hole into the center of the leather piece so that it fit tightly onto the barrel stud. I then stacked the leather shims to achieve the fit I was looking for. I even split one in half thickness wise to get the proper thickness. I did coat the leather with Hoppes storage grease where it came into contact with the metal. Accuracy improved greatly with the .22lr barrel. Group size shrunk in half! I believe this works because the leather is firm enough to be an effective spacer but not hard like steel/brass washers or too flimsy like rubber o-rings (o-rings may be the ticket for wood fore-ends but not synthetic!). Just though I'd pass this along.
