I just bought a Winchester P17, have a problem with the front sight, as you can see from the photo , is not vertical, what's your suggestion,is there a solution without removing the barrel?
I would caution you against tightening the barrel without determining if the barrel is in fact torqued to the correct tighteness. And what your headspace is. If you have a minimum headspace rifle, you could go below "Go".

I don't have my P17 barrel in front of me. I don't remember if the front sight base had a key slot or not. If so, you may be able to cut another slot and rekey the thing.

Before I did anything I would have someone examine the rifle for headspace and determine if the extractor groove is positioned to allow the barrel to be turned a little more.

Recutting the cone and cutting an extractor groove is a pain. If the barrel needs to be replaced see if you can get one of those CMPicon Criterion barrels. These barrels are better than any military barrel every installed on a P17.
Information
Warning: This is a relatively older thread
This discussion is older than 360 days. Some information contained in it may no longer be current.