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which rear sight adjustment tool

Glock 42
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adjustable inexpensive rear sight alignment
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2.3K views 28 replies 25 participants last post by  cal45  
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#1 ·
Hi everyone. Somehow my rear sight got very off by about 2mm while I was learning how to disassemble and reassemble. What is the best choice for me to adjust the rear sight. It's the rear sight that came with the Glock 42. I may eventually need to realign a Glock 19.

What do I need to consider when choosing the alignment tool I need. I used Copilot (Microsoft Bing's AI). I don't want to rely solely on that.

Is it a good idea for me to replace my rear sight with an adjustable rear sight, one that can be adjusted more conveniently with a screwdriver?
 
#5 ·
www.midwayusa.com

MGW Rear Sight Installation Tool Glock

This sturdy rear sight tool for Glock handguns is designed to push the rear sight without damaging sight or slide. Designed specifically for factory or...
www.midwayusa.com www.midwayusa.com
www.midwayusa.com

MGW Rear Sight Installation Tool Adapter Glock 42, 43

This is the adapter kit required to allow the MGW Glock Rear Sight Tool (product number 884401) to work with the Glock 42 and 43. DISCLAIMER: This...
www.midwayusa.com www.midwayusa.com

Post 1, here are a couple of weblinks for one of the options from MGW, the sight tool company.
The first link is the main tool, used for most larger-than-G42 Glocks.
The 2nd link is for the adapter kit for the slimline Glocks, such as the G42.
Together, the tools cost ~$150 (plus probable sales tax and shipping charges).

There are likely other tools on the market which can also used.
 
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#8 ·
MGW makes good sight tools, and the suggestions above are valid.

As an alternative, I purchased an NCStar from Amazon. I am not saying it is the best nor perfect, but for the money it has been a great value!

If I were a gunsmith pushing sights every day, I would buy the more expensive tool, but for me to push no more than a dozen sights a year... this one has worked great on a variety of guns (including XD's, which are notoriously tough to budge!).


I am including a link to three threads on the topic (two are posts on GlockTalk, one is a link to Midway). Just another option to consider.

https://www.glocktalk.com/threads/g.../threads/glockstore-blue-sight-pusher-vs-nc-star-version.1861286/#post-29640732

https://www.glocktalk.com/threads/which-sight-pusher.1853356/page-2?post_id=29491102#post-29491102

NcStar Vism Universal Rear Sight Tool


Sells for about $55 on Amazon.

Image
 
#19 ·
boilergonzo said:
As an alternative, I purchased an NCStar from Amazon. I am not saying it is the best nor perfect, but for the money it has been a great value!

NcStar Vism Universal Rear Sight Tool

Sells for about $55 on Amazon.
Click to expand...

I agree ^^^^^^

I've changed out and/or adjusted dozens of sights for myself and my buddies. Works great and I picked mine up at a gun show for 50 bucks.

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#9 ·
#13 ·
I'd just tap it back in place with a wooden dowel if it's the factory polymer sights.

I have the Lyman pusher and use that for sights personally. You can get away with the punch method on poly sights or steel sights if you pad it, but on night sights you risk cracking a vial and really need a pusher. If you aren't working with a night sight, there is no point in dropping the money for an expensive pusher unless you plan on doing lots of sights.
 
#16 ·
One thing to maybe consider with windage adjustment methods is the practicality of making small, precise changes in the field. This can be an argument in favor of a more expensive tool.

When I started out with Glocks, I just used a punch and vise, centered the sight, and used the set screw with lots of loctite. After using adjustable rears on other guns for a while, I started pressing Glock rears (Warren or Sevigny) in dry (small amount of oil) with no fitting, and leaving the set screws out.

This makes it really easy to use the MGW at the range. It costs more, but for me is a much better overall result.
 
#17 ·
#22 ·
I have had the MGW Pro model for what seems like forever and it is great. The slide collets with the additional slide side braces have been the best solution for changing sights that some one decided to red loctite in place without damaging the slide.
It can also be used to change the front sights on several weapons)
It is also probably the most expensive solution - so the price should be amortized over a lot of sight changes/adjustments or years to make it make sense.
I use painters tape on the top of the slide and a pair of calipers to measure the width of the slide, and then measure to center of the slide, mark center on the tape and then drift the sight to center (by tapping method or sight pusher) checking center for front in the same way. You do not need an expensive caliper, just a good brand. Once the sights are center lined, test firing will show any necessary adjustments (most likely very minor if at all).
 
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