Glock mos proper cowitness iron sights

SureThing · Jul 9, 2019

i searched the forms and could not find a recent thread on this so I wanted to post another since mos Glocks are getting more common.

From what I can tell the mos slide sights higher than cut slides due to the adapter base. Also the burris fast fire and vortex venom sit higher than the rmr.

With this I decided to call ameriglo and was told I needed their 5xl for the mos with a venom and the rmr would be a 3xl. Dawson does a better job stating which works with what sight for the mos.

That being said I have a few questions for those using the Burris or Venom. Have you tried any of the above sights. How do you like them. Also for the front post do you have a solid black or fiber optic or a dot of some sort with the red dot?

DNA · Jul 9, 2019

Have you looked into the Doctor Optic sight? That one seems like it sits way low...

Dan

venenoindy · Jul 10, 2019

I did a lot of research as I have a G17 gen 5 MOS on the way, I have an RMR and my research tells me that .395 front would be full cowitness with the RMR. In my case I want as clean as possible window so I chose to go lower 1/4.

Bigdaddyo1972 · Jul 10, 2019

Glock 19 Gen 5 MOS Vortex Venom with Ameriglo GL-812
Ameriglo: Glock 5XL Suppressor Sight Set (.407" Tritium Black Front / .507" Black Rear) GL-812

SureThing · Jul 10, 2019

Ok. Cool. Ty. Very helpful. Would you say that is a 1/3 cowitness

venenoindy · Jul 10, 2019

Thanks for the pictures, that is a cool set up.

SgtGing · Jul 10, 2019

I went with Dawson MOS night sights for my Glock 41 with a Burris fastfire. They are fantastic and Dawson Precision is a great company who support police.

Sent from my SM-N960U using Tapatalk

boilergonzo · Jul 10, 2019

I went through some hassle, trying to get images for different setups, and will pass along a few links I found helpful, in addition to my photo of my G34MOS.

The photos by mdkc were helpful (and I went with this setup due to the height)
https://www.glocktalk.com/threads/d...for-g34-mos-with-burris-fastfire-iii.1644070/

Post 8 in this thread by SgtGing was helpful to me.
https://www.glocktalk.com/threads/mos-series-work-with-burris-ffiii.1576127/

Below is my Burris FFIII with Dawson's, which may at least help you see how my Dawson's line up on my G34MOS a Burris FFIII.

Dawson Description: "Dawson Precision Glock MOS Fixed Co-Witness Sight Set - Tritium Rear & Tritium Front(For Trijicon RMR and similar scope bases)"

Photo: Co-witness view of my G34MOS with Dawson 310-071 sights and a Burris Fastfire III red dot:

SureThing · Jul 10, 2019

Which front

SgtGing said:
I went with Dawson MOS night sights for my Glock 41 with a Burris fastfire. They are fantastic and Dawson Precision is a great company who support police.

Sent from my SM-N960U using Tapatalk

sight is that

Buckshot Barry · Jul 10, 2019

Since the subject didn't specify a particular red dot, I want to say that the Trijicon Glock Suppressor Night Sights co-witness perfectly with a RMR RM07

So much so you can align the dot with the sights and be dead on when checking the RMR dot adjustment.

JBP55 · Jul 11, 2019

When I go with a RDS on a range only pistol I may try to learn to shoot it without any sights using the dot only.

boilergonzo · Jul 11, 2019

SureThing said:
Which front sight is that

I cannot answer for him, and he has a G41, but it appears to be the Tritium Dawson front. For my G34, the specs for the similar sight are as follows:

Part Number 310-071 (front and rear Tritium set for G34 and Trijicon RMR). At the NRA Convention in Indy a few years ago I stopped at the Dawson booth, and got their recommendation for my G34 MOA, and it worked exactly as I had hoped.

Sight Details

Dawson Carry Fixed Rear .395 Tall x .125 Notch Width
Dawson Fiber Optic and Black Front Sight .390 Tall x .100 Wide, Tritium .125 Wide
Easy to Install - Sight Punches, Allen Wrench and Instructions Included!
CNC Machined From Bar Stock to Exacting Specifications

Source: https://dawsonprecision.com/dawson-...ock-mos-fixed-co-witness-sight-set-for-trijicon-rmr-and-similar-red-dot-scopes/

SgtGing may have other info for you, but his Dawson sight looks similar to mine from what I can see in the photo. I am totally guessing regarding his, so you may want to wait for his reply.

Hope that helps a bit! Good luck.

glockenturm · Jul 11, 2019

You should zero your dot independent of the iron sights.
I have mine zeroed at 25 yards.
If I align the iron sights, the dot falls below the front sight. My irons are roughly zeroed at 15 yards.
I have a 19.4 milled with an RMR and Ameriglo sights.

boilergonzo · Jul 11, 2019

glockenturm said:
You should zero your dot independent of the iron sights.
I have mine zeroed at 25 yards.
If I align the iron sights, the dot falls below the front sight. My irons are roughly zeroed at 15 yards.
I have a 19.4 milled with an RMR and Ameriglo sights.

That is why I went with the Dawson sights that I did. The red dot sits like a setting sun on the front post when both are aligned. The photo I posted is not perfectly aligned, and the fill dot is a bit above the horizon.

When I was searching for my sights, lots of them blocked the red dot when aligned, and I felt the Dawson's did a pretty good job of allowing simultaneous use of both as a true co-witness.

MajorD · Jul 11, 2019

glockenturm said:
You should zero your dot independent of the iron sights.
I have mine zeroed at 25 yards.
If I align the iron sights, the dot falls below the front sight. My irons are roughly zeroed at 15 yards.
I have a 19.4 milled with an RMR and Ameriglo sights.

My personal opinion when the dot is working your sights should be ignored and out of view. Only when the dot dies do the sights then come into play
Absolute co witness never made sense to me as it encourages you to look at the sight which is a negative.
The military did absolute cowitness with rifles simply because it saved ammo at the zero range and also if you had to replace a broken red dot in the field with no chance to zero you could be reasonably assured the sight was on if you zeroed it to the top of the front sight post

glockenturm · Jul 11, 2019

MajorD said:
My personal opinion when the dot is working your sights should be ignored and out of view. Only when the dot dies do the sights then come into play
Absolute co witness never made sense to me as it encourages you to look at the sight which is a negative.
The military did absolute cowitness with rifles simply because it saved ammo at the zero range and also if you had to replace a broken red dot in the field with no chance to zero you could be reasonably assured the sight was on if you zeroed it to the top of the front sight post

Yes, the point I was trying to make.... Although less eloquently....

Unfortunately, people transitioning from rifle RDS to pistol RDS try to use them the same way. Also, unfortunately, many try to use a rifle RDS as a scope and that is even worse when used on a pistol.
You have to use both eyes open and focus on target.
I have been shooting my Ruger 22/45 with a Romeo 5 at some Steel Challenge matches.
Took the 19 out Tuesday night. Have used it in IDPA matches.
I highly recommend shooting Steel with your RDS equipped handgun and some competitions in general.

The beauty of steel is you get instantaneous feedback so you can make instant corrections.

Everything is should basically be invisible minus the dot itself.

Also, switching between the 22 and 9 during the match has opened my mind to the feasibility of a 9mm compensator.

rustytxrx · Jul 15, 2019

The Vortex viper has two white witness line that continue up the Viper. I do not know yet if they cowittness the red dot. Been shooting my hunting round to find trajectory from 10y to 50y at 10y intervals. Did not pay any attention to front sight. G40 is zeroed at 20y.

Will pay attention next range trip. Sorry I did not line up pic to index sights properly Lined with camera . I think I would need a taller front sight

Dannyi · Jul 16, 2019

G19.4 MOS with a Shield RMS. Installed using factory standard iron sights that co-witness perfect. Only reflex that will co-witness with standard Glock sights.

Goldendog Redux · Jul 16, 2019

I have Dawsons for my 19 MOS RMR. totally good to go. Dawson is the company you want

rustytxrx · Jul 16, 2019

Goldendog Redux said:
I have Dawsons for my 19 MOS RMR. totally good to go. Dawson is the company you want

I am 75 years old. The Red Dot has let me continue to hunt with pistols. I feel blessed red dots hit the public right when I needed them. Red dot and internet have indeed extended my personal magazine.

[edit well I need to need to give the after market triggers some credit also].

Glock mos proper cowitness iron sights

SureThing

DNA

venenoindy

Bigdaddyo1972

SureThing

venenoindy

SgtGing

boilergonzo

SureThing

Buckshot Barry

JBP55

boilergonzo

glockenturm

boilergonzo

MajorD

glockenturm

rustytxrx

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