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This is a discussion on Sights within the P250 & P320 Modular Pistols forums, part of the SIG Sauer Pistols category; Hi all, New to the forum and I have a question about X Ray Sights for my brand new P320c. It came with a number ...


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P250 & P320 Modular Pistols P250, P320, and Exchange kits

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Old 01-10-2017, 11:09 AM   #1
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Sights

Hi all,
New to the forum and I have a question about X Ray Sights for my brand new P320c.
It came with a number 6 front and number 8 rear sight. I was planning to match those with the new x ray sights, but I called sig to confirm and was told I should shoot the gun first and make sure it doesn't shoot low, and if it does, I should change to an 8 front and keep the 8 rear. My question is, if it shoots low, how much will changing the sights bring it up? How much is too little to try and correct? I didn't think to ask the guy at sig about that lol. Also if anyone has opinions on u shaped vs square rear sights I would be glad to hear them, I'm having trouble deciding!


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Old 01-10-2017, 11:46 AM   #2
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Hello and welcome. Changing the front sight by 1 number changes POI by 1" at 25 yards. Numbers up, impact up. Numbers down, impact down. The 6/8 is standard for .40/.45 and 8/8 is standard for 9/.357. I typically recommend for people to match the sights that are currently on the gun. But at self-defense distances (less than 7 yards), the sight numbers really don't make much of a difference. I prefer the square notch, but it's all personal preference.

BTW, X-Ray sights are pretty awesome.
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Old 01-10-2017, 12:39 PM   #3
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Old 01-10-2017, 12:43 PM   #4
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Thanks for the reply! I read before that 8/8 is standard for a 9mm, which is what originally confused me because mine is 9mm but has the 6/8. So I am concerned that I will need to change it, but I don't often shoot past about 15 yards so I'm not sure if I'll notice a difference or not. At the same time, I want it to be as accurate as possible for any times that I do want to shoot longer distances. I'm really torn between round and square now lol I've only ever shot with square before, but I am about to put trijicon hd sights, which have the U notch, on my XD mod 2 and S&W Shield and I was thinking it might be good to have everything the same if I could. Then again, you don't really base anything off the bottom of the sight, it's all the top so I'm not sure. I couldn't even remember for sure what type of notch my other pistols had without specifically looking....
One other point of confusion now, I called sig earlier in case I didn't get any replies to this and the rep there said changing sizes would raise the poi 2" at 25 something, but I'm not sure if it was yards, meters, or feet lol


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Old 01-10-2017, 12:45 PM   #5
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Old 01-10-2017, 12:48 PM   #6
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Quote:
Originally Posted by leathermaneod View Post
One other point of confusion now, I called sig earlier in case I didn't get any replies to this and the rep there said changing sizes would raise the poi 2" at 25 something, but I'm not sure if it was yards, meters, or feet lol
it's yards . SIG put those sights on your gun for a reason. Most likely they are good to go. But go ahead and shoot it first before you change the sights. Then you'll know for sure.
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Old 01-10-2017, 12:49 PM   #7
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Hi, my P320C also came with 6/8 contrast sights and I found it does shoot a little low. I just picked up a SC X-Change kit and it came equipped with 8/8 Siglite sights. I plan to take it to the range tomorrow and see how it compares to the 6/8 combo.
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Old 01-10-2017, 01:00 PM   #8
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^^By shooting low do you mean lower than POA/POI? .
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Old 01-10-2017, 01:32 PM   #9
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leathermaneod, that 2" increment would be rear sight changes between numbers, just as bblr mentioned the front sight is 1" increments.

ricky bobby, meaning POI lower than POA

Sinkhole, their reference is using a combat hold... front sight "dot" covering bullseye at 25 yards.
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Old 01-10-2017, 01:33 PM   #10
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@Sinkhole, I am very interested to hear how your shooting goes with the 8/8 sights! At what distance were you shooting low with the 6/8 sights? and how low are we talking? I am in the military and will be going home this weekend and hopefully getting my LGS to install these sights along with the Trijicon HD's on my XD Mod 2 and S&W Shield. I have to buy the sights I need here before I leave and take them with me, but I can't shoot the gun till I go home. So I have to buy two sets and return the size I don't need when I get back. Super complicated I know lol. Then theres the dilema of u shape vs square. I was going to get both a 6/8 and 8/8 with the round rear sight, but the local place I can get them only had a 6/8 round, but they have a 6/8 and 8/8 in square. So I can stick with what I've got, a 6/8 u shape and 8/8 square, and let how it shoots decide, or I can just go with square in both sizes. I am extremely OCD so this is a really tough call.
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Old 01-10-2017, 01:37 PM   #11
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@Willard, thanks for clearing that up! I have read of the P320 having issues with shooting low so I am guessing I will probably have to switch to the 8/8s, but we'll see.
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Old 01-10-2017, 03:40 PM   #12
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The target below was shot at 10 yards, my 1st time out with the gun. As you can see it's to bad, it would probably be POA if I moved it out to 20 or 25. As for the shape. My FNX-9 came with U-shape night sights and it prefer that shape but every other gun i have has a square rear sight. It's all personal preference. I will probably put U-shape X-ray sights on my compact slide but if they are a pain for my shop to get I will get the squars and not loose any sleep over it.

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Old 01-10-2017, 07:28 PM   #13
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I had the same questions as I am looking at new sights for my P320F. I found this page with lots of good SIG sight info!

SIG Sauer Sight Heights and Sight Numbers - Real Gun Reviews
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Old 01-11-2017, 04:23 PM   #14
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Just got back from the range. Found my SC with the 8/8 Siglite sights shoots about 2"-3" above POA and if I put the compact slide on the same frame it's about an inch below POA with 6/8 sights at 10 yards. I ran the target out to 25 and found the 6/8 sights were pretty much on the money. Looks like I'm gonna need to purchase a #6 front sight for the SC.
Oh yeah and I am using a combat hold.

1 more thing. about the double click I mentioned. I had 1 failure to reset on the 1st magazine with the SC and then it ran fire for the remaining 15 following magazines.

Last edited by Sinkhole; 01-11-2017 at 04:31 PM.
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Old 01-12-2017, 11:06 AM   #15
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Range day yesterday. P320f 9mm. 6 front and 8 rear factory contrast sights. I didn't do any supported shooting but off hand combat hold the point of impact was where the front dot covered at 10 yards. I was doing mixed slow and rapid fire drills on the full size green B-27 silhouette target at 10 yards. The Apex flat trigger and slight FCU polish job were noticeable. Group sizes shrunk from last time.

I also learned that this pistol loves CCI Lawman 147gr ammo. I had 1 slow fire group on the little silhouette in the upper left at 10 yds with 4 that were covered by a 50 cent piece and the 5th made it silver dollar sized.

Orange Peel target is the M&P Pro 5" with a Storm Lake threaded barrel, 2 15rd mags fired. Needless to say IT SHOOTS!


Last edited by KillerMedic; 01-12-2017 at 03:26 PM. Reason: new picture
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