welcome from az.

 

thank you, cheers

 

You could just aim 2" lower or higher than the bullseye and see where your hits are. It is certainly good enough for center of mass shooting. Think of it as knowing your hold overs....or unders lol. I have an X5 with the Romeo1. Same deal the integrated rear "sight" of the optic is good enough. Just hold your front sight consistent in relationship to the rear sight. You'll get a feel for where it hits. Honestly the damn battery has lasts sooo long I have never had to use the front sight other than just seeing where its sighted in.

 

Makes sense, thank you for the tip. Great to know battery life is long on these! With your X5, is the front sight tall enough to line up with the rear on the Romeo?

 

Congrats on your M18. "Optic ready" means that your slide was milled to install a red dot sight. The iron sights would be a backup if you have a red dot installed. The red dot sight works independently from the iron sights. If you need the iron sights, then you would need a taller front sight. Sig sells suppressor height sights that would work, or the front sight would need to be equivalent to ".400. Or aim lower like Abominator says. Hope this helps.

 

Thank you for tips, great looking gun. I’m guessing if I add a taller front sight, would that in return change my POI?

 

When I saw your post I went to You Tube to see what people that own the M17 / M18 / X-Compact / with the Romeo 1 Pro have done about their front sight.

None of the videos mentioned changing the front sight to a higher Suppressor Height Sight.
They all left the original front sight for Co-Witness through the Romeo 1 Pro.
Out of all of them the X-Compact looked the best to me with the Green X-Ray3 front Sight.
It really stood out if you did need to use it with the Romeo 1 Pro.

On a SigTalk Search one post stated that he changed the front sight on his M17 to a higher sight and wished that he didn't.

So..as you are doing here before you do anything investigate it a bit further.
You can call Sig and see if they recommend a front sight change or not..
Also wait to hear from other M18 / M17 / X-Compact owners that have the Romeo 1 Pro and get their take on it.

Congrats on your new M18 and welcome to SigTalk from the Sunny Beaches of Ft. Lauderdale & South Beach!
The Beaches have been very quiet..hopefully we can go back soon.

Stay Safe!

 

That’s the plan; I don’t want to change to much. I will reach out to sig and see what their input is.

Thank you! Enjoy the weather! Chicago has been very rainy lately. Lake Michigan probably won’t open for a while, plus they stay freezing cold until about August, so we have some time. Cheers

 

Maybe the black shroud you have around the optic is making it higher than normal?

 

I think the stock front sight will be a bit low. Remember, co-witness with the optic may not mean visually that they line up together. Iron sights are a “back up option” if the optic fails. I would probably look into a suppressor height sight from Sig or maybe something aftermarket. Dawson perhaps.

 

I’m guessing a change in front sight will change POA & POI?

 

just like on a rifle, the iron sights are back up sights, treat them accordingly, "good enough" to hit a human at 7-10 yards is "good enough" for a pistol.

 

Greetings from Kansas.

 

If I had your pistol, I would bench the gun to see POA/POI with the existing front sight.

1) If I didn't like POI, I would use some card stock and tape to mock up a taller front until I got my POI.

2) Measure the height of my mock-up and order a Dawson or Ameriglo plain front sight.
Dawson will ship with an aluminum punch which will knock out and install your sights.
Mine pushed out from right to left.
Note the arrow on the Dawson sight showing direction of install.

Plain sight because who wants two red dots in their sight picture ?

 

The red dot and iron sights are totally independent of each other and should be zero'd independently.

The iron sights are strictly for backup in the event the optic fails, and should be just tall enough that you can see them thru the bottom of the optic lens when the DOT is on target.

Many of the questions people have about Dot optics have been answered by the great YT videos posted in this thread:


https://sigtalk.com/gun-training-tactics/372832-pistol-optic-stop-chasing-dot.html
.
.

 

Just a data point, on my M17 with stock front sight and a R1P, if I line the top of the post flush with the top of the R1P notch, and 6-O'clock hold on the target , I hit way high at 25 yards, but windage is dead on. If I do a center hold with the top of the post on my POA, POI is closer but still at least 4-6" high. If I drop the post down so that it is just barely visible in the notch, I'm pretty much on, but that's a tough sight picture to be consistent with, and it's slow.

So I go with a center hold and I can compensate well enough to make fast minute of man hits in the off-chance the optic fails me. It's good enough that I don't feel the need to faff around with getting a taller front sight. Would rather spend that money on ammo.

I do imagine it would shoot even higher on an M18 with its shorter sight radius though.

Would have been nice if Sig could have made the faux-rear sight notch deeper and through the entire optic body.

 

Sig sights use combat hold. Just cover the target with the sights so you’ll hit it.

 

Hi guys, new sig owner & new sigtalk member.

I recently purchased an M18 & while at my gun shop I qualified for 10% off accessories, so I ended up getting the Romeo1 Pro. When I look down the optic, the rear sight that is integrated into the optic is a lot taller that the stock optic/plate.

My question is, how do the sights line up now with the optic on? Sig states this pistol is optic ready, but Will I need a taller front sight to compensate for the taller rear? Ideally I don’t want a taller front sight but if I have to because of the taller rear, I guess it is what it is.

I am new to red dots, Any insight would be great. I’ve searched and searched everywhere but haven’t found any information regarding the M18.

Cheers

Just got my M18. What exact light is that?

 

It is Olight PL-Mini 2. 600 lumens. Great cheap light. Rhino Concealment makes light bearing holsters for the M18.

Black Rhino Concealment, LLC

Black Rhino Concealment is a minority-owned small business in Lowell, In.

blackrhinoconcealment.com

 

I have an X-Carry, which is similar to the M18. I used a suppressor height sight with my Romeo 1 Pro.

Sent from my Pixel 3a using Tapatalk

 

Using your new irons, does this change your POA vs POI?

 

Hi guys, new sig owner & new sigtalk member.

I recently purchased an M18 & while at my gun shop I qualified for 10% off accessories, so I ended up getting the Romeo1 Pro. When I look down the optic, the rear sight that is integrated into the optic is a lot taller that the stock optic/plate.

My question is, how do the sights line up now with the optic on? Sig states this pistol is optic ready, but Will I need a taller front sight to compensate for the taller rear? Ideally I don’t want a taller front sight but if I have to because of the taller rear, I guess it is what it is.

I am new to red dots, Any insight would be great. I’ve searched and searched everywhere but haven’t found any information regarding the M18.

Cheers

The backup iron sight is on the Romeo 1 Pro itself, just look at the notch. On the M17/M18 you can't mount a separate rear sight when the Romeo 1 Pro is attached. You can get other optic adapter plates that can do this though. The only type of sight that will properly line up in the front will be suppressor sights. Sig and Trijicon make suppressor height sights. There are other after market ones too but Trijicon is the gold standard for sure. However you don't need them. There is no absolute need to co-witness the iron sights with the dot. What if the dot fails? Romeo 1 Pro has great battery life, it goes to sleep as soon as it senses you not on the gun and it wakes back up when you handle it. Romeo 1 Pro is also very durable and reliable. The only way I see it getting to the point of not working is a extreme physical trauma to the sight. That kind of trauma will likely put the whole gun out of action and probably the user. Don't adjust the zero to co-witness non-suppressor sights. Just zero the dot with a laser bore sight round, 24 bucks and worth it. Or shoot to zero. If you zero to co-witness the stock sights you will be all over the place at distances shorter than what you zeroed at and way off at distances greater than what you zeroed at.

 

The backup iron sight is on the Romeo 1 Pro itself, just look at the notch. On the M17/M18 you can't mount a separate rear sight when the Romeo 1 Pro is attached. You can get other optic adapter plates that can do this though. The only type of sight that will properly line up in the front will be suppressor sights. Sig and Trijicon make suppressor height sights. There are other after market ones too but Trijicon is the gold standard for sure. However you don't need them. There is no absolute need to co-witness the iron sights with the dot. What if the dot fails? Romeo 1 Pro has great battery life, it goes to sleep as soon as it senses you not on the gun and it wakes back up when you handle it. Romeo 1 Pro is also very durable and reliable. The only way I see it getting to the point of not working is a extreme physical trauma to the sight. That kind of trauma will likely put the whole gun out of action and probably the user. Don't adjust the zero to co-witness non-suppressor sights. Just zero the dot with a laser bore sight round, 24 bucks and worth it. Or shoot to zero. If you zero to co-witness the stock sights you will be all over the place at distances shorter than what you zeroed at and way off at distances greater than what you zeroed at.

Good stuff. One note, as a long time, two years, user of two Romeo one pro‘s, one of which is on my EDC pistol in my profile picture, carrying all day every day about 16 hours on the belt, the battery last about five months.



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Hi @Marcopolo224, what did you end up with? Did you change the front post? And if so, what did you get?