Say you buy a brand new gun and take it to the range and find it shoots to the left or right or up or down. If the sight isn't adjustable, how can one adjust it? Would you just send it back to the manufacturer?
usually one of the sights can be drifted left or right. height adjustments can require replacing the front blade, but I would not worry about adjusting sights on a brand new gun for the first 200 rounds. sometimes POI will change on break in.