I insert two of the same size dental picks on the side of the front post. They’re thin enough up by the handle to take up the gap between the post and the hood while I snug up the nut. This helps keep the post from twisting and pivoting to one side. Then as you mentioned, adjust the rear sight to dial in the sights.
I thought about buying used M4’s on the cheap. Kitting then out a little and having the parts plated in NP3 for resale. It seemed like a lot of up front money to maybe make 500-800 bucks, which the government would want a cut of.
Out of my league... Some people have more money than sense or at least more money than me. As always the buyer determines the price something is worth. I should be listing some of my firearms that I have been thinking of selling. With all this crazy panic buying now would be the time. ?
There is no simple elevation adjustment in the front sight post. The nut is meant to be tightened until it threads to the base of the front sight post. You can shift the front post side to side slightly when tightening it to the tower.
I’ve never handled the factory night sights to see if they’re the same as the Meprolights.