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Discussion Starter #1
Hi All,



Well, yesterday I got my M&P40 back from the gunsmith after having him install a Warren rear sight and an XS standard front sight. I took it to the range last night to give it a whirl and I am sad to say that I was overjoyed and broken hearted.



You see, I LOVED the sight picture as did the RTO on duty. The front sight just leaps out and settles quite naturally into the rear notch of the Warren. However, and I should have checked this before making my decision, the XS sight is at least 1/16" if not nearly 1/8" taller than the stock sight. This was causing me to have real nice tight groups, 1" low at 3 yards, continuing to drop the farther out I went. I had this independenty confirmed by other shooters to rule out operator error. Sight Picture was putting the dot over the POA just as described on the XS website.



Now I can't blame anyone but myself for this. I was REALLY hoping this setup would work. I guess I'll just have to eat crow and get a OEM night sight for the front.




Oh well,

MC
 

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Could be worse, you could have paid someone to do it for you?




ps- Shouldn't your gunsmith have known this and said something to you?
 

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At least you didnt have to cut new dovetails and ruin your slide to install the XS sights and find out they wont work the way you want.
 

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Discussion Starter #4
On a basic visual inspection there wouldn't be any real good indicator that there would be a problem. He just did his job and installed the sights that I gave him. I can't complain. XS sights aren't all that common around here so he probably wouldn't have known.



MC
 

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Couple of things:



1) I used to run the Big Dot exclusively on a CZ years ago and you need to make sure you read exactly what was noted in the XS instructions as to where the middle dot or the perimeter of the white ring needs to be. I don't remember much but I did realize my mistake later after running the pistol for months without checking the instructions.



2) Unfortunately, I do not know of anyone who has ran this setup before. Becos' of the uniqueness of the XS sight, I think it's meant to be used as a combo with it's V rear. I could be wrong but if Monte from XS is looking on this board, maybe he can better explain things.



Why wouldn't you consider running the XS combo? It is a great sight system and I would not hesitate to recommend it for carry.
 

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A decent gunsmith would have simply measured the height of the front and rear sight prior to removal. As long as the difference in height, front to rear, is maintained there would be no change in POI.



I had trouble with glare off of the rounded contour of the original sight changing with sun angle resulting in verticle variations in POI. My cure was to file the rear face of both sights flat (removed dots). This action changed height of the rear sight. I compensated by filing the front to proper relationship with rear.



POI is now slightly above top of sights to 50 yds. The way I like them. :twisted:
 

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Discussion Starter #7
i-SHOT said:
Why wouldn't you consider running the XS combo? It is a great sight system and I would not hesitate to recommend it for carry.


I was hoping for something a bit more traditional. I'm a coach at a local range and frequently have to demonstrate proper sighting technique "Equal height, Equal light." Since the XS sights are such a dramatic departure from tradtional sighting systems I was hoping to get the advantage without straying to far. If they were to come out with the M&P sights in the 24/7 configuration I may consider swapping over though.



MC
 

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i-SHOT said:
Couple of things:



1) I used to run the Big Dot exclusively on a CZ years ago and you need to make sure you read exactly what was noted in the XS instructions as to where the middle dot or the perimeter of the white ring needs to be. I don't remember much but I did realize my mistake later after running the pistol for months without checking the instructions.



2) Unfortunately, I do not know of anyone who has ran this setup before. Becos' of the uniqueness of the XS sight, I think it's meant to be used as a combo with it's V rear. I could be wrong but if Monte from XS is looking on this board, maybe he can better explain things.



Why wouldn't you consider running the XS combo? It is a great sight system and I would not hesitate to recommend it for carry.


Helmie is correct. Our front sight is designed to be used with our express rear V sight. I have heard of people using our fronts with other rear sights or using our rear sight with fiber optic fronts, but the sights aren't designed for that.



You are also going to see a bit of variation from gun to gun and shooter to shooter. For example, when I tried a Warren rear sight with one of our front sights, I was hitting about 3/4" low at 25 yards, which is acceptable.



Walkingbush,



I understand being an instructor and needing a "traditional" sight setup. Sounds like you need two M&Ps-one with conventional notch and post sights and one with XS Sights




Monte
 

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Discussion Starter #9
Joe Long said:
Walkingbush,



I understand being an instructor and needing a "traditional" sight setup. Sounds like you need two M&Ps-one with conventional notch and post sights and one with XS Sights




Monte


Don't think the thought hasn't crossed my mind... If only they would come out with the M&P sight in 24/7 I'll have the front ready to go then all I'll need is the rear for my M&P compact.




I already have a trijicon stock front on order from Brownells so the XS will be sitting patiently awaiting a new partner.



MC
 

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walkingbush,



Unfortunately, we can not make a 24/7 rear sight for the M&P. There just isn't enough steel to install a tritium vial vertically in the rear sight. If we increase the height of the rear sight to allow tritium installation, we would have to make the front sight taller to get the pistol to regulate correctly. If we were to do that, then the front sight wouldn't fit in any currently made holster.



Monte
 

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Discussion Starter #12
Bummer. Joe, has XS ever considered a dot setup on the smaller rear sights? I seem to recall Bowie playing around with the idea but I haven't seen where it has gone.



MC
 

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walkingbush said:
Bummer. Joe, has XS ever considered a dot setup on the smaller rear sights? I seem to recall Bowie playing around with the idea but I haven't seen where it has gone.



MC


That's a custom setup that David was working on. I haven't heard anything about it in a while. We are pretty set on the vertical line setup.



Monte
 

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What I really wanted to see was an XS rear sight with no vertical line, dots, serations or anything. Just the proper height to match the original M&P's

This should make a really quick sight when using a fiber optic front.
 
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