I want to change out the trigger on a Bushmaster I picked up from a member of this board, got a LaRue MBT. So I'm in the process of disassembly where you pull the safety selector out of the lower and I noticed a threaded 'pin' extending from the main shaft of the selector. Makes it impossible to pull the pin out. Looks like it has a small hex slot. I don't have a hex that small and I barely know what I am doing anyway, so I put it back together.
Can someone tell me what that is all about? I looked on the interwebs and didn't see anything close to that, of course I didn't know what to search under because I don't know what it's called. Anyone willing to help out the AR noob?