I recently bought a set of Truglo Tfx pro sights for my wife's Glock 43 and really liked them. So I decided to buy a set for my P320 compact. The rear sight installed without any issues. However when I went to install the front sight I can push the sight, using my finger, all the way through the dovetail channel using minimal pressure. Upon inspecting the sight I noticed there is a gap between the base of the sight and the gun when the sight is seated in the middle of the channel and I can rock the sight back and forth. I have sent an email to Truglo and I'm awaiting to hear back from them. Has anyone else had this problem and are there any ideas of what I can do, pending Truglo 's response,  to fix this. I really like the sights and hope it can be fixed.

Wow sounds like they screwed up for the dovetails. Although I will admit on my P320 I haven't replaced the stock sites cause they line up with the Sig Romeo on it and are Sig Glow.

Either they screwed up or the front sight is not compatible.
I recently acquired a TFO from Sig.
Since you removed the front sight, measure the bases of both to see what is the different.
Post back here with the sizes and I can do the same for comparison.

As far as the gap, I read on the Sig Forum that the gap is expected.

It could be an out of spec sight.

I had issues with an ameriglo front sight on my M&P m2.0, it was so loose it fell out of the dovetail. We tried another sight and it worked fine.