I bought the VTAC back in July 2018. I haven't shot it very much. Didn't shoot it well on the first outing and didn't really go back to it.

Fast forward to the past couple of weeks. I've been to the range each week, shooting well with all the other guns I've taken with me of various calibers.

So, took the VTAC out and figured I'd resolve my issues with it. However....

When I line up the three fiber optic dots, the gun shoots low. I have to raise the front fiber optic dot above the line between the two rear dots rather than placing it between the two dots.

Just looking at the sights, If I were to line up the Tritium dots as I'm used to, the gun would shoot even lower.

I'm perplexed. Anyone have any advice or insight? It seems perhaps the front sight is the wrong height. They make a 6 and an 8. However, I don't seen any numbers on the sights to identify which ones are on the gun.

This message has been edited. Last edited by: SIGWolf,

Are you using a combat hold? Or a six o’clock hold?

https://reddotshooters.com/combat-sight-picture/

quote:

Originally posted by NoQuota:
Are you using a combat hold? Or a six o’clock hold?

https://reddotshooters.com/combat-sight-picture/

Combat Hold, which I use with all my pistols and for all of them POA and POI match.

When I use Combat Hold with the VTAC, POI is about 1.5" to 2.0" low. This issue is where the front sight dot is positioned in relation to the rear sight dots.

I line the dots up with the front sight dot between and in line with the rear sight dots.

A couple of possible issues:

First off, don't align the dots. They exist to help you locate and focus on the sights, not for precise alignment. The posts are your alignment tools. Top of the front sight post level with the top of the rear sight, equal distance between the inside of the rear posts and the front post. I'm not sure what fiber optic sights the VTAC comes with, but that may be the problem.

I have had Sigs come with the wrong sights, though. My P245 has #8 rear and a #6 front and hits to point of aim. I bought a P220 Compact (basically the same gun) with the same sight setup on it, and it hit 4-5" high at 15 yards consistently. I swapped the rear sight on the P220 to a #6, and it now hits to point of aim. I don't know why the P220 needed a lower rear sight, but it clearly did.

quote:

Originally posted by 92fstech:
A couple of possible issues:

First off, don't align the dots. They exist to help you locate and focus on the sights, not for precise alignment. The posts are your alignment tools. Top of the front sight post level with the top of the rear sight, equal distance between the inside of the rear posts and the front post. I'm not sure what fiber optic sights the VTAC comes with, but that may be the problem.

I have had Sigs come with the wrong sights, though. My P245 has #8 rear and a #6 front and hits to point of aim. I bought a P220 Compact (basically the same gun) with the same sight setup on it, and it hit 4-5" high at 15 yards consistently. I swapped the rear sight on the P220 to a #6, and it now hits to point of aim. I don't know why the P220 needed a lower rear sight, but it clearly did.

It doesn't really matter whether I would align the dots or the top of the post. I have to raise the front sight so the top of the front sight post is well above the top of the rear sight post for it to shoot to POA at 10 ft. It shoots low otherwise. At 15 yards it would be much worse if I aligned either the dots or top of posts.

This message has been edited. Last edited by: SIGWolf,

quote:

Originally posted by SIGWolf:

It doesn't really matter whether I would align the dots or the top of the post. I have to raise the front sight so the top of the front sight post is well above the op of the rear sight post for it to shoot to POA at 10 ft. It shoots low otherwise. At 15 yards it would be much worse if I aligned either the dots or top of posts.

Gotcha. That's a problem. Sounds like it definitely needs some different sights.

quote:

Originally posted by SIGWolf:

quote:

Originally posted by 92fstech:
A couple of possible issues:

First off, don't align the dots. They exist to help you locate and focus on the sights, not for precise alignment. The posts are your alignment tools. Top of the front sight post level with the top of the rear sight, equal distance between the inside of the rear posts and the front post. I'm not sure what fiber optic sights the VTAC comes with, but that may be the problem.

I have had Sigs come with the wrong sights, though. My P245 has #8 rear and a #6 front and hits to point of aim. I bought a P220 Compact (basically the same gun) with the same sight setup on it, and it hit 4-5" high at 15 yards consistently. I swapped the rear sight on the P220 to a #6, and it now hits to point of aim. I don't know why the P220 needed a lower rear sight, but it clearly did.

It doesn't really matter whether I would align the dots or the top of the post. I have to raise the front sight so the top of the front sight post is well above the top of the rear sight post for it to shoot to POA at 10 ft. It shoots low otherwise. At 15 yards it would be much worse if I aligned either the dots or top of posts.

I have a message in to GGI and Viking Tactical. Perhaps just replacing the front sight as they have a 6/8 and an 8/8 set. I found an earlier thread here with reference to an article indicating SIG realized they had an issue with some of the VTACs.

""When I mentioned that to the folks at Sig, I was told they had discovered early into the first run of X-VTAC’s that some of the pistols did in fact group low. After some research, Sig made a change.

According to Phil Strader, Sig’s Pistol Product Manager, additional milling was done to the rear sight dovetail to correct the low shot placement in all current X-VTAC’s.""

Unfortunately, I am not the original owner, even though i purchased it from my FFL and the owner and it was in essential new condition, never been fired, so getting SIG to do anything about it, even with a "Limited Lifetime Warranty" I expect is a lost cause.

So, we'll see what Viking Tactical and Brue Gray have to say. Hopefully one or the other has some advice to give.

The comment about the rear sight cut doesn't make sense to me though. If the gun is shooting low, don't you move the rear sight in the direction you want the POI to move? How can you raise the rear sight by additional milling of the dovetail cut?

Well, GGI is out of play. I just received a response from them and they aren't doing any milling of slides at this point, too much other demand on their machine work for the forseeable future.

quote:

The comment about the rear sight cut doesn't make sense to me though. If the gun is shooting low, don't you move the rear sight in the direction you want the POI to move? How can you raise the rear sight by additional milling of the dovetail cut?

You are thinking right...milling, and thus further lowering the rear sight, is only going to lower the POI even further.

If Viking doesn't work out, I'd give Sig CS a try. If it's a known issue, maybe they will stand behind it even if you aren't the original owner. Otherwise, is say your best bet is to just order and replace the sights on your own.

quote:

Originally posted by 92fstech:

quote:

The comment about the rear sight cut doesn't make sense to me though. If the gun is shooting low, don't you move the rear sight in the direction you want the POI to move? How can you raise the rear sight by additional milling of the dovetail cut?

You are thinking right...milling, and thus further lowering the rear sight, is only going to lower the POI even further.

If Viking doesn't work out, I'd give Sig CS a try. If it's a known issue, maybe they will stand behind it even if you aren't the original owner. Otherwise, is say your best bet is to just order and replace the sights on your own.

Thanks for the corroboration.

I have a message in to SIG. I emailed, if I don't hear from them, I'll call. Just couldn't work that into the day this week.

I haven't heard from Viking Tactical yet. I also contacted EGW. I've worked with them before.

I'm hoping the guns were shipped with an 8/8 and that a 6/8 will correct the issue. However, try as I might, I can't find a number on the sights as I would usually expect.

I figured this was going to be an involved resolution, if resolution there may be.

Replacing the sights on my own is where Viking Tactical comes in. Otherwise, I would have to just change the sights to something entirely different. At first I though it was the design of the sights, but I don't think that's it. So, I'm not sure, if I were to go with another set of sights, if I wouldn't run into the same issue. But, that is down the road a bit from where I am right now. I expect it's going to take a while.

If you have a set of calipers, Grayguns has the measurements listed on their website: https://grayguns.com/product/v...s-sig-sauer-pistols/

If the slide needs machining and I couldn't get SIG to do it for free, I would be tempted to sell the slide and buy a regular SIG slide to replace it. They have the Optic Ready full length slide in Stainless on sale at the moment for $250. If I had to pay for new sights and machine work and shipping both ways I think it would be pretty close to that. Maybe.

P320 XSERIES (OPTIC READY) SLIDE ASSEMBLY - 9MM - STAINLESS 4.7"

quote:

Originally posted by Paten:
If the slide needs machining and I couldn't get SIG to do it for free, I would be tempted to sell the slide and buy a regular SIG slide to replace it. They have the Optic Ready full length slide in Stainless on sale at the moment for $250. If I had to pay for new sights and machine work and shipping both ways I think it would be pretty close to that. Maybe.

P320 XSERIES (OPTIC READY) SLIDE ASSEMBLY - 9MM - STAINLESS 4.7"

This is probably the “Final Solution” if nothing else works to preserve the “VTAC” look and configuration. As you say, ultimately it may come down to the money.

Even if SIG will do the work, if it costs me, it may not be worth it.

Looks like Viking Tactical is also out of play. They referred me to SIG but corroborated they were aware of an issue with some of the early VTACs and that it involved a milling issue or rather a “slide geometry” issue.

I’ve asked for any details they can or are willing to provide, for information. Perhaps EGW will be able to assist.

I haven’t heard from SIG yet.

EGW is also out of play. Options other than SIG are rapidly dwindling. Fewer people are doing gunsmithing.

Have you looked locally to you for gunsmiths? Sights shouldn't be a major job. Maybe ask around some gunstores to see if they offer services or can recommend someone close by.

quote:

Originally posted by Paten:
Have you looked locally to you for gunsmiths? Sights shouldn't be a major job. Maybe ask around some gunstores to see if they offer services or can recommend someone close by.

I haven't yet found one locally. There was a guy who has done great work for me, but he's not doing that sort of thing any more.

I don't know of anyone else, but I'm going to look into it.

Right now it looks like it's SIG or no one. So, I'll probably go that route and hope it turns out better than I anticipate it will.

This message has been edited. Last edited by: SIGWolf,

IMO Sig or Viking ought to fix it. They collaborated to build a gun that doesn't shoot to point of aim. It's not a user-induced problem, it's a manufacturing defect. If nothing else they ought to replace the sights with something that's properly zeroed. Hopefully you can get them to correct it.

ETA: I had a similar problem with a Springfield 1911 and SAI sent me a new rear sight for free.

quote:

Originally posted by 92fstech:
IMO Sig or Viking ought to fix it. They collaborated to build a gun that doesn't shoot to point of aim. It's not a user-induced problem, it's a manufacturing defect. If nothing else they ought to replace the sights with something that's properly zeroed. Hopefully you can get them to correct it.

ETA: I had a similar problem with a Springfield 1911 and SAI sent me a new rear sight for free.

I completely agree with you. I have just recently found someone who might also be willing to address the issue. I found them through a custom shop locally that doesn't do gunsmithing on anything but their own guns.

I've emailed them.

MJ Gun Shop

I'll see what SIG is willing to do and what it might cost. I'm just not confident it's not going to be a tangled mess trying to get them to do the work and not simply declare it's my shooting or charging me to do the work.

If they charge me, it's a question of who can do the work and not charge and arm and a leg for it. I'm going to call SIG as well and see what they would charge if they decide it's actually my issue.