I don't have one! But I found something that may work as well. Fowler Pride makes a base whose mounting holes/pins looks identical to a ff2/3. It is a one piece mount with built in protective wings and looks to be pretty low profile. They have them for a few models like the benelli, and I believe Mossberg and rem. You can see them on
Midwayusa.com in the optic section under red dots mounts and bases. I don't know how to post a link.Check them out, looks like it may work as well or better than the 336.