A little help here(Got my front post stuck)

[Javi]

About a month ago, I ended my indoor range session with my M&P 15-22 with some 50 foot(farthest the target would go) shooting. I kept shooting high so I kept lowering & lowering my Magpul MBUS sights until it reached the very bottom. I didn't realize it was all the way down there until I got home to clean it up. I could always adjust the front sight post by hand but this time it wasn't budging. Think I used a few things before breaking out the pliers and all that did was mar up the thing. It would turn plenty but it would not raise up like it was suppose to. Just bought a DPMS front sight tool from Ammo Bros and it's turning but again, not going anywhere. Can anyone help? I want to get this thing out to the range soon