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Question re: gunsmith installing new sights on G19.5

2.9K views 29 replies 17 participants last post by  mavs  
#1 ·
I'm planning to have night sights installed on my Gen5 19. When a gunsmith puts on new sights, what is the expective standard practice as regards sight alignment and insuring shooting to point of aim?

I live close to the Glock HQ in Smyrna, so I may have them do it. Do they install only the Glock night sight?
 
#2 ·
The best a gunsmith can do is take measurements with calipers, or some other device, to ensure the sights are centered on the slide. Sights sets try to approximate the point of aim (POA), point of impact (POI) that will work for the average of a particular gun, but production guns are assembled parts and the POA/POI can vary from gun to gun.

Before you have sights installed, you should determine where your gun prints with the stock sights. Given that you know the height of the front and rear sights, you’ll have a better understanding of how the POA/POI will change with a new set of sights.
 
#3 ·
Are you paying for the gunsmith to take your pistol to the range sight it in with your ammo? If you’re just taking it to a gun shop they will likely locktite the front sight screw and center the rear sight in the dovetail. That’s about it.
I wouldn’t expect Glock to install any other manufacturer’s sights, either.
 
#13 ·
The end use will have to go to the range and sight in the gun after sights are installed to try to set the "hold" position on his gun. The person who installs the sights will not be able to really determine what hold position the sights will be in after installation.
Ideally, this ^^^ is the exact opposite of what you would want to do, although many do it that way.
In this way, the shooter adjusts to the sight set that has been chosen for him/her.

This way, the shooter chooses the sight set...
1) Bench gun with existing sights at 20 yards using preferred "hold"
2) Note POA/POI
3) Measure existing sight heights (above slide)
4) Use Sight Calculator either Dawson or Ameriglo website to make any adjustments (if needed)
5) Buy correct sight set
 
#15 ·
I understand that changing sights might be a little intimidating to do yourself, but I would recommend thinking about it. It isn't that hard and there are reasons why I would recommend it. One big reason is that you may want to be able to make adjustments to the rear sight or swap front sights in the future. You will need the tools to do that and can get them, probably for less than you'd pay an armorer to do it. Also, I am not convinced that someone else sighting in a (my) pistols will zero them as I would based on my vision.

What you will need is a front sight too, a sight pusher tool for the rear and some loctite. The thing is that you don't need a costly professional sight pusher for the one or two times you will use it. I have a 3D printed pusher as shown in the picture below. It works just fine for one or two installations and an occasional sight adjustment. It's light weight and easily taken to the range when you go to sight in the rear. $16 on Ebay (I paid $20 for an earlier version). There are similar ones on Amazon as are front sight tools $6-$10 but there are more expensive ones too. The pusher I linked is from Ebay. If you were doing this a lot I would recommend professional tools but it seems like this is a one and done.
There are lots of videos to show you how to do it. The only difference is how the sight pusher holds your slide and pushes the rear into place. I've put one YouTube link down below so you can get an idea. It's simple and no big deal. Trust me. I've also changed sights with nylon punches instead of a sight pusher, but I don't recommend it because it's very difficult to be precise when zeroing. Also if not careful you can damage the trititium with nylon punches. Again, not recommended. But I have found the 3D printed sight pusher ideal for what I need and think it's great to have. It is so small and light that I keep it in my range bag just in case. Good luck.

Cheap sight pusher tool
Blue loctite

Image


 
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#16 ·
If you're only going to do one gun, its probably just more cost-effective to let someone else do it.

If you have more than one gun, and like better sights than what Glock ships them with, then its well worth the money to get a proper tool. Depending on what type of sights you like, you can still usually find pretty good deals/sale//discounts, etc, on the web, if you bother looking.

Ive used a couple of the MGW tools, and they work great. Their SIG tool does both the front and rear sights and has witness marks to get you mechanical zero. The Glock tool only does the rear, and doesn't have the witness mark, but I always end up with them off to the right anyway. Another nice thing about the MGW tool is, you dont have to take the slide of the gun at the range to make adjustments. Just lock the slide back and slip the tool on.

I also have one of the NcStar "universal" type tools that will do a lot of different guns, but as with most things "universal" its not perfect. And its a bit of a PITA to use. But it "works".

I paid for both my SIG and Glock MGW tools by selling the old night sights I removed from used guns I bought and/or guns I had on eBay. Dont know why people are willing to pay so much, but I usually get about $35-40 a set there, which always amazed me. The average cost for a new set of Meprolight three dot night sights that I was usually replacing them with, was costing me about $55-70.

Glocks are really very easy to do if you have the tools (front sight tool, Loctite, rear sight tool, and a piece of fine emery paper). Its about a 5-10 minute job once you've done a couple.

The front sights are pretty much self explanatory, just make sure you use some Loctite, or they will come loose.

The rear sight, just "push" the old sight off, left to right (looking at it from the rear), and "pull" the new one on from the right to left (it matters). Before you even start, run the bottom of the new sight across the sheet of emery on a flat, hard surface, until the black finish on the flat bottom is pretty much worn off. Dont get too crazy, but this is how you adjust or fit the rear sight to the dovetail. Usually, just removing the finish is all you need to do, but sometimes, you may need to do it some more, if its really tight and doesnt want to move. One small drop of oil wiped across the bottom of the dovetail usually helps too.

If youre cheap, and dont want to spend the $$ for the tool you can use a punch and hammer on the rear sight, if you like to struggle, but I would not use that method if youre installing night sights. Never made any sense to me to be beating on them and maybe breaking or compromising the vials. Its also a lot more of a PITA to try and get the zero right.
 
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#17 ·
If you're only going to do one gun, its probably just more cost-effective to let someone else do it.
That's what I thought until the armorer quoted me $35 do the job and the tools that I knew could work for me cost only $27 (when I only had one Glock). And it turned out that after the initial installation the rear sight needed one or two very, very slight adjustments that would have been inconvenient to back to the armorer to make. And then I bought another Glock 2 years later and I had the tools and experience. For one time use the MGW or even NcStar, and more expensive sight pushers, while great tools are, IMO and experience more than what is required. Again, JMO.
 
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#19 ·
The Glock front sight is easy using the thinwall nut driver made for the task.
I like the Squirrel Daddy tool but there are others.

The rear sight can be a disaster if the rear sight is not prepped properly.
Dave Dawson (Dawson Precision) has a well done video on installing the Glock rear sight.
He's a hammer and punch guy.
 
#21 ·
Best purchase I've made for accessories is the mgw pusher!!! I've installed my own sights now enough times its extremely easy and can adjust or change the sights out quickly if ya don't like them! Honestly buy one you won't regret it! I've also made alot of side money with it as well! $25 to change sights its a deal for both sides! Dont let it scare you you should be more afraid of the careless guys at the gunshop hacking up your slide!
 
#24 ·
Its well worth the money if you have a number of guns and change out the sights and like them adjusted properly.

Not real point to getting one if you only have one gun and are good with the sights you have.

Im constantly picking things up and trading them off, and its worth it to me. I save a lot of money on night sights buying them online and dont have to have someone else do it. If you plan on doing a lot of them, or even if you dont, in the long run, its worth the extra money to get the better tools.
 
#25 ·
Its well worth the money if you have a number of guns and change out the sights and like them adjusted properly.

Not real point to getting one if you only have one gun and are good with the sights you have.

Im constantly picking things up and trading them off, and its worth it to me. I save a lot of money on night sights buying them online and dont have to have someone else do it. If you plan on doing a lot of them, or even if you dont, in the long run, its worth the extra money to get the better tools.
Yes I think that probably is something you would want to have if you plan to do that. But I don't think the majority of folks do that.
 
#28 ·
Thanks very much for all the replies, opinions and advice. At this point I think I'm going to purchase the $100 Ameriglo Bold sights at the Glock facility and let them install it. They tell do it for free in about 45 min to an hour. I like the idea of having my own pusher and doing things myself, and may pick one up if I decide to change some other sights (like on my Walther PDP or old CZ p-01). Thanks, again, everyone. I learned something from each reply.
 
#29 · (Edited)
Took the pistol to Glock Shop this morning. I dealt with two people: the gate guard and the rep who came out and took my pistol. Both were very nice folks. I asked what the process was for replacement. The rep said they replace sights (with Ameriglo Bold) measure for alignment and shoot the pistol (I didn't ask if they shoot, he volunteered that bit of info). In any case, Cost was $100 + tax and I was out the door in 25 minutes. I will get it to the range next week.

At their own initiative, they also replaced the slide cover plate (said it had a ding on it that I probably did while reattaching the slide after cleaning), and something internal that seemed to be slightly bent. Unknown how that happened.

On the way out the guard gave a little bag o'swag:

Lanyard
Pen
Glock stickers
Rubber velcro patch
Glock 17 key-chain
Glock perfection lapel pin
Image
 
#30 ·
Took the pistol to Glock Shop this morning. I dealt with two people: the gate guard and the rep who came out and took my pistol. Both were very nice folks. I asked what the process was for replacement. The rep said they replace sights (with Ameriglo Bold) measure for alignment and shoot the pistol (I didn't ask if they shoot, he volunteered that bit of info). In any case, Cost was $100 + tax and I was out the door in 25 minutes. I will get it to the range next week.

At their own initiative, they also replaced the slide cover plate (said it had a ding on it that I probably did while reattaching the slide after cleaning), and something internal that seemed to be slightly bent. Unknown how that happened.

On the way out the guard gave a little bag o'swag:

Lanyard
Pen
Glock stickers
Rubber velcro patch
Glock 17 key-chain
Glock perfection lapel pin
View attachment 1204782
Sounds like excellent service to me !