I've just got a newish Tikka T3 in .222.
I went to mount a scope on it, using Leupold STD bases. These screw into pre-drilled holes in the reciever.
However, the mount holes have little plastic plugs in them. The plugs look as if they should unscrew, but when I tried to do this, they just spun round and round in place. They are flush with the top of the reciever, so I can't get any purchase on them to lever them out.
Does anyone have any suggestions for how to get these things out??