Uncle Mike sells replacement swivels that they say "replaces the factory fore-end bolt without dismantling."
Here is a picture of my rifle:

Here is a diagram of my rifle:

Here is a picture of the uncle mike's swivel, with the a picture of the action tube cap next to it:

As you can see, the uncle mike's bolt that replaces the factory fore-end bolt is much larger than the threaded bolt that goes in the action tube cap. How is this part supposed to fit on my rifle?
Thanks in advance,
Jason C