Thin front sight post for an AR-15? Where to buy?

I'm looking for a front sight post that is thinner than standard. I believe that the standard post is 0.070 inches wide and I'm looking for something around 0.050 instead. I'd like to find one that is either square or rounded. I bought a few online but when they arrived they turned out to be rectangular. What I mean by that is that when looking at it from the top down they were thin one direction but not the other, or only thin on one side.

I am wondering if such a beast (square and thin) exists and if so where to find it?

They used to have something exactly like that on midway but it's been discontinued...

https://www.midwayusa.com/product/844511/dpms-front-sight-post-square-050-wide-dcm-cmp-ar-15-matte

Thanks in advance

I don't like the idea of buying a set of 7 just for the 1 sight I actually want. And with the KNS sights they're only thin at the top, I'd prefer one that is the same width for it's entire length. The round sight that LunchMoney found might be the best option. I actually have one rifle set up with the discontinued DPMS sight and I really like it, so does my wife. She's asking for the same sight to be installed on her rifle, which is what prompted me to start this thread (when I realized I couldn't buy the DPMS sight anymore).

"Do you have a file?"

Yeah but I'm not confident I could do it right, would probably end up with a lop-sided sight when I was done.

Thanks imashooter this is exactly what I'm looking for, just ordered 2, can't believe the shipping fee though, $9.43 seems like alot for parts this small/light...

Just for the heck of it I bought a round one from Blitzkrieg Components too. She can try both and decide which she likes better, and then we'll have spare sights in case we do any future rifle builds...