You really don't need either, I almost never use it unless I know that a particular rail and scope are staying on that action for a long time.
If it were me I would see how the glue gel works, if it loosens up then go ahead with the blue. If you need to get the screws out and the gel won't let go, try taking a soldering iron tip and resting it on the screw head to transfer a little heat to the screw and that normally loosens up most of the loc-tite thread lockers and it has worked on other things that I have super-glued and then tried to take back apart.
On another note, I would make it a habit of assembling with no thread loc agent of any type, and going to the range and shooting it first. If you have an unseen scope or base issue its easier to take it back apart without the loc-tite. If all is well, then bring it home and put on the loc-tite if you feel you need it.
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