Adjusting fixed night sights

[goon]

I just traded a Gen II Glock 22 on a Gen III Glock 23. I already like the 23 better but I noticed while shooting it this evening that groups about 3" to the left at 25 yards. I have changed this before on other handguns by just drifting the rear sight to the right a little bit.
The only hangup is that this one has tritium night sights. I don't want to just go whacking on it with a hammer and punch because I am afraid that I may damage them. Is this a valid concern?
If so, how do I go about adjusting them?
Thanks.

 

[Brian Williams]

get a sight pusher.

 

[goon]

If that is the best way then it will probably be a trip to the gunsmith. Doesn't make sense to me to buy a tool that I will only use once.
Thanks.

 

[Smithers]

Don't worry about those capsules, they won't break that easily.

Just hammer away with a hammer and punch (use nylon or brass.)

 

[goon]

That is what the local smiths all said they adjust them with but it still didn't seem like the best thing to start with.
But I keep coming back to the fact that they do take repeated hammering back and forth thousands of time on a slide without problems.

 

[AK103K]

I opted for the sight pusher for my SIG's. Its really a multi purpose tool. You can easily change out the sights,(front and rear) or adjust them. The pusher also makes small adjustments a little more precise than a whack with a hammer. It also has a "zero" witness mark on it, that so far, has been dead on for every gun I've used it on.

I dont think whacking the night sights is really a good idea. I know they hold up to recoil fine, but thats a whole different impact impulse. If the sight is just a little tight, it may not readily move and if you get heavy handed, I think you could easily damage the vial. I had one pistol that the rear sight would not budge at all in the direction it needed to, and had to be removed and the bottom run across a piece of emery before it would. If your going to whack them, I'd be careful.

 

[JDGray]

I've never seen a Glock, that didn't have the rear sight drifted all the way to the right. Tap as close to the base as possible, or use a pusher.